How-To

Pet Emergency Info on Your Phone Lock Screen: What Is Safe to Put There

By EmergencyPetPrep Editorial · Updated

Key takeaways

  • The benefit and the hazard are one property. Apple's support article on Medical ID (published March 10, 2026, read August 13, 2026) states that it "helps first responders access your critical medical information from the Lock screen, without needing your passcode." That same sentence describes what a stranger, a thief and a person you are avoiding can do with your phone. Every field you add has to be worth being read by all of them, because the phone cannot tell them apart.
  • Google publishes the warning in plain words, in two help centers, and Apple's nearest equivalent is not phrased as a warning at all. Google's Android Help article on emergency features states "Anyone who picks up your phone can find your lock screen message and emergency information even if your phone is locked." Google's Pixel Phone Help article carries the same caution in slightly different words: "Anyone who picks up your phone can view your lock screen message and emergency information even with your phone locked." Apple's Platform Security guide describes Medical ID as stored using "the Data Protection class No Protection so that it's accessible without having to enter the device passcode." It also frames the whole feature as a trade-off: "Medical ID is an optional feature that lets users decide how to balance both safety and privacy concerns." That is Apple naming the same exposure Google warns about, in the language of a design choice rather than a caution. We read all of these on August 13, 2026.
  • Four different mechanisms get called "the lock screen" and they expose different amounts. A wallpaper image is visible the instant the screen wakes, with no tap and no gate of any kind. Apple's iPhone User Guide describes reaching a Medical ID by "swiping up or pressing the Home button (depending on your iPhone model), tapping Emergency on the passcode screen, then tapping Medical ID." Android's emergency info needs "Show when locked" turned on. A reader who thinks they are using one and is actually using another publishes more than they meant to.
  • No home address, on any of them. During an evacuation an address attached to a description of the animals inside tells whoever is holding your phone that a specific house is empty right now. We found no authority publishing that warning for lock screens, so treat it as this site's own reasoning rather than a standard, and note that ASPCA does publish the opposite trade-off for a front-door sticker, where the address is unavoidable because the sticker is on the door.
  • The out-of-area contact is another human being whose details you are publishing, and they cannot see what you wrote. Ask first. Apple's Personal Safety User Guide makes the same point about emergency contacts in its own way, stating "it's important to make sure that the person or people assigned as emergency contacts are people you trust."

Every other piece of paper in your pet emergency plan stays somewhere. The rescue sticker is on the door. The alert card is on the fridge. The vaccination folder is in the go bag. The phone in your pocket is the only one of them that is with you when the thing happens, and it is the only one a stranger can read while you are unconscious, or while you are standing in a parking lot two hundred miles from your house trying to explain to someone that there are three cats in a spare bedroom.

That is why people put pet information on a lock screen. It is a reasonable instinct and the platforms support it. Apple’s support article on Medical ID, published March 10, 2026 and read for this page on August 13, 2026, opens with the pitch: “Medical ID helps first responders access your critical medical information from the Lock screen, without needing your passcode.” Google publishes a similar feature and similar instructions.

Read Apple’s sentence again with a different person in mind. Without needing your passcode. That is the whole benefit, and it is also the whole problem, and they are not two facts about this feature. They are one fact seen from two sides. Anything you put on a lock screen has been published to every person who will ever hold that phone: the paramedic, the neighbor, the person who picks it up off the sidewalk, the person who takes it out of your bag, and the person you moved house to get away from. The phone cannot tell them apart and it does not try. So this page is not a list of nice things to add. It is a decision rule about which fields are worth that trade, followed by the setup steps read off Apple’s and Google’s own documentation rather than off anyone’s memory.

Our fridge pet alert card covers the copy that stays at the house for a caregiver who lets themselves in. This is the copy that travels with you, and because it travels, the audience is different and so are the rules.

One Phrase, Four Different Mechanisms

“Put it on my lock screen” describes several different things that expose different amounts of information. Getting this distinction wrong is the single most likely way a reader publishes more than they intended, so it goes first.

Mechanism What a person has to do to read it Access control
Lock-screen wallpaper image Wake the screen None at all
Android lock screen text message Wake the screen None at all, per Google’s own caution
iPhone Medical ID with Show When Locked Swipe up or press Home, tap Emergency, tap Medical ID No passcode required
Android emergency info with Show when locked Reach the emergency screen and open the emergency information No passcode required

A wallpaper is an image and nothing more. Apple’s iPhone User Guide article on wallpaper states: “On iPhone, you can change the wallpaper on the Lock Screen and the Home Screen. You can set your wallpaper in Settings or through the wallpaper gallery from your Lock Screen.” That is the entire mechanism. If you generate an image with text on it and set it as your Lock Screen wallpaper, every word on that image is visible the instant the screen lights up, to anyone within reading distance, forever, with no tap required. It is the most exposed of these options by a wide margin and it is also the one people reach for first, because it is the easiest to make.

Android has a text field that behaves the same way. Google’s Android Help article documents it under the heading “Put a message on your lock screen”, with steps that open the Settings app, tap Display, then under “Lock display” tap Lock screen and then Add text on lock screen. Google’s own suggestion for what to write is narrow: “Enter your message, like info that would help someone return your phone if you lost it.” Note what that sentence is scoped to. Returning the phone. Not running your household.

iPhone Medical ID is a record you reach through the Emergency screen. The iOS 26 edition of Apple’s iPhone User Guide describes the route in a note: “A first responder views your Medical ID from the Lock Screen by swiping up or pressing the Home button (depending on your iPhone model), tapping Emergency on the passcode screen, then tapping Medical ID.” Three deliberate taps, and no passcode anywhere in that sequence. The same guide states that Medical ID information “can be shared automatically during an emergency call (U.S. and Canada only), and also appears on the Lock Screen of your iPhone and Apple Watch.”

Android emergency info is the closest equivalent and it has its own switch. Google’s Android Help article says the information goes in through the Safety app, and then gives the instruction for showing your emergency information when your screen is locked: tap “Emergency info access”, then “Show when locked”. Google’s Pixel Phone Help article names the same two controls for the same purpose.

The practical consequence is that “I put it on my lock screen” can mean a note the whole world reads at a glance or a record someone has to go looking for. Neither is protected. But the difference between them is real, and it is the difference between information you have handed to a room and information you have left in a drawer that has no lock on it.

What Apple Publishes, In Apple’s Words

Menus move between iOS versions and between devices, and Apple publishes the same article in more than one edition, so read the version that matches your phone rather than trusting steps typed from memory. The Medical ID guide article alone is published in separate iOS 26, iOS 18, iOS 17 and iOS 16 editions at four different addresses. Everything below was read on August 13, 2026.

Apple’s support article, at support.apple.com/en-us/105072 with a published date of March 10, 2026, gives this sequence: open the Health app and tap the Summary tab, tap your profile picture in the upper corner, then tap Medical ID underneath it. Then comes the switch that this whole page is about: “To make your Medical ID available from the Lock screen on your iPhone, turn on Show When Locked. In an emergency, this gives information to people who want to help.”

The iPhone User Guide’s iOS 26 edition compresses the same step into one line: “Tap Edit, scroll to the bottom, then turn on Show When Locked and Emergency Call.”

There is a second, separate switch that is easy to confuse with the first. Apple’s support article states: “To share your Medical ID with emergency responders, turn on Share During Emergency Call. When you make a call or send a text to emergency services on your iPhone or Apple Watch, your Medical ID will automatically be shared with emergency services.” That one is a transmission during a call you place. Show When Locked is a display on a screen anyone can wake. They are different features with different audiences and turning one on does not turn on the other.

Read Apple’s framing of who the Lock Screen audience is, because it is broader than the headline suggests. The headline says first responders. The instruction says “this gives information to people who want to help.” People who want to help is not a credentialed category. It is anybody. Apple is being accurate rather than careless there, and the accuracy is the part worth carrying forward.

What Google Publishes, And The Warning Apple’s Pages Do Not Carry

Google documents the same class of feature across two help centers, and both carry a caution in a highlighted “Important” block before the setup steps.

Google’s Android Help article “Get help during an emergency with your Android phone” states: “Anyone who picks up your phone can find your lock screen message and emergency information even if your phone is locked. You can turn this setting off in the Safety app.”

Google’s Pixel Phone Help article “Get help in an emergency using your Pixel phone” makes the same point in wording that is close but not identical: “Anyone who picks up your phone can view your lock screen message and emergency information even with your phone locked. You can turn off this setting in the Personal Safety app.”

Those two sentences are not the same sentence and this page is not going to pretend they are. One says find and the other says view. One says the Safety app and the other says the Personal Safety app. They were read side by side on August 13, 2026, and they are quoted separately here because they are two documents that say a similar thing rather than one sentence appearing twice.

The version notes differ too, which is the practical reason to read the page for your own device: the Android Help article states “Some of these steps work only on Android 12 and up”, while the Pixel article states “Some of these steps work only on Android 13 and up.”

Here is the finding that matters most, stated with its boundaries. We opened five Apple pages for this article, and only one of them comes close to an equivalent warning, and even that one is not phrased as a warning. The five are the Medical ID support article, the iPhone User Guide article on Medical ID, the iPhone User Guide article on wallpaper, the Personal Safety User Guide page on emergency calls, and the Apple Platform Security guide’s page on protecting access to health data. The first four describe the Lock Screen access path, describe the audience as people who want to help, and never state that anyone holding the phone can read the record. The fifth, Platform Security, is different: it states that Medical ID is stored using “the Data Protection class No Protection so that it’s accessible without having to enter the device passcode.” It also names the trade-off directly: “Medical ID is an optional feature that lets users decide how to balance both safety and privacy concerns.” That is the same fact Google states as a caution, written instead as a design specification for developers and security researchers, in a document most readers setting up their phone will never open. Google states its version twice, in two help centers, above the fold, in a sentence any reader will see before finishing setup. That is a statement about five documents we read on one day and not a claim about everything Apple has ever published. If Apple publishes a plainer caution somewhere we did not open, this section is incomplete rather than wrong. The reason to say it at all is that a reader who follows Apple’s consumer-facing pages alone will finish setup without ever encountering the sentence Google put first, or the sentence Apple buried in its security documentation.

The Trade-Off, And The Rule This Page Uses

Now the part that neither company writes down.

Apple and Google both publish thorough product documentation for these features. What we did not find on any page we opened, from either company or from ASPCA or Humane World for Animals, is an analysis of which fields are worth publishing to an unknown reader and which are not. Google names the hazard in one sentence and moves on to the steps. None of the pages we opened works the consequence through to a field list. So the field list below is ours.

Label on it, plainly: this is this page’s own reasoning, not a published protocol. Weigh it as reasoning. Here is the reasoning, in three questions asked of every candidate field.

One: does this help the person holding my phone act for my animal in the next hour? A vet’s number does. A phone number for me does. My dog’s full vaccination history does not, because nobody standing over an unconscious stranger is going to act on it.

Two: what does this hand to a person who means me harm, or who simply is not honest? This is the question the feature’s own design makes unavoidable, because the audience is unfiltered by construction. Any field that only makes sense to a helpful reader has failed this question.

Three: is this someone else’s information? A second person’s name and number is that person’s data, and they cannot see what you published about them, because it is on your screen and not theirs.

Almost every hard call on a lock screen resolves under those three questions, and the two that resolve most sharply are the address and the animal count.

The Field List

What goes on

Your first name and a phone number that reaches you. This is the field the whole artifact exists for. It is also the one Google’s own suggested use scopes to, in its line about information that would help someone return a lost phone.

A second number that is not yours. Prefer a contact outside the affected area over a local one, because the local number is likely to be attached to a person in the same evacuation, on the same overloaded network, in the same dark house as you. Our microchip registration audit works the out-of-area contact chain through properly, including which registry fields hold the alternates and why a single cell number is the weakest possible configuration. This ordering, out-of-area before local, is our recommendation and not a standard we found published for lock screens specifically, so treat it as a judgment call you are free to reverse if your situation is different.

Your veterinarian’s clinic name and number. Publishing it is the cheapest useful field on the list, and it is not free: a clinic has a public address, so naming it narrows where you live and gives someone searching for you a business that holds your records and can be talked to. For most readers that is worth the route it opens to the animal’s care, and ASPCA’s own rescue alert sticker recommendation, quoted in full further down, includes the name and number of your veterinarian as something to display where strangers read it. If anyone has reason to look for you, this field goes off with the rest. See the section below.

That animals depend on you, and roughly what they are. Two cats and a dog. A parrot. This is the sentence that makes the rest of the card mean something, because without it a finder has no reason to keep calling after the first voicemail. Read the next subsection before you write this line, though, because it does not travel alone safely.

What stays off

Your home address. Always, on every one of these mechanisms. Not on a wallpaper, not in a Medical ID, not in Android emergency info, not in the Android lock screen text field. The reason has to sit right next to the rule, so here it is: during an evacuation, an address printed next to a note that animals are alone in the house tells whoever is holding your phone that a specific building is empty right now. That is the exact condition an evacuation creates for entire neighborhoods at once. A phone number does the useful half of the job and withholds the dangerous half, because the person who wants to help has to reach a human being who can decide what to tell them.

We found no authority publishing that warning for lock screens, and the sources we did open are listed at the foot of this page. It is our reasoning. It is also worth stating what cuts against it: a person genuinely trying to help your animals cannot get to them without an address, and this rule accepts that cost on purpose, because the route to the animals should run through a phone call rather than through a broadcast.

The count and species of your animals paired with anything that locates your home. The count on its own, next to a phone number, is fine and useful. The count next to an address, or next to anything that lets a reader work out which house is yours, is the disclosure this whole section is warning about, and the two halves are only dangerous together. If you write the animal line, keep the locating half off the same screen.

Your full legal name. A first name is enough for a human being trying to return a phone or reach a family. A full legal name is a search key into voter files, property records and data brokers, and it converts a helpful note into a lookup that ends at your front door without you ever having typed the address.

Anything about a second person beyond a first name and a number, and none of that until you have asked them. More on this below.

Your own diagnoses, unless you are putting them there for their real purpose. Medical ID is a medical record and the point below explains why filling it with animal logistics is a bad trade.

The Door Sticker Publishes More, And ASPCA Recommends It Anyway

There is an obvious objection to everything above and it deserves a direct answer rather than a quiet omission, because the objection comes from a source this site cites elsewhere with approval.

ASPCA’s disaster preparedness page, read August 13, 2026, recommends a rescue alert sticker in these words: “This easy-to-use sticker will let people know that pets are inside your home. Make sure it is visible to rescue workers (we recommend placing it on or near your front door), and that it includes the types and number of pets in your home as well as the name and number of your veterinarian.”

Types and number of pets, on the front door. That is a published recommendation from a national animal welfare organization to disclose the same animal inventory this page has just told you to keep away from anything that identifies your home, and to disclose it at the most identifying location that exists, which is the door itself.

We are not going to pretend that recommendation does not exist, and we are not going to quietly contradict it either. Three things are true at once.

First, a door sticker has no way to avoid publishing the location, because being at the location is the entire mechanism. The address is not a field on the sticker. It is the sticker’s position in the world. There is no version of that artifact that keeps the count and drops the location, so the trade-off ASPCA is making is not available to the sticker as a choice.

Second, a lock screen does have that choice, which is exactly why this page makes it differently. You can carry the animal count and drop the address, and you lose nothing that a phone call cannot recover.

Third, ASPCA builds in an update step that acknowledges the same staleness problem from a different direction: “If you must evacuate with your pets, and if time allows, write “EVACUATED” across the stickers.” That instruction exists because a sticker that says animals are inside after they have left is worse than no sticker. A lock screen has the same failure mode with no equivalent instruction published anywhere we read, which means keeping it current is on you.

Our own reporting on the sticker is honest about a further limit: our page on how firefighters know pets are inside reads a working firefighter’s published account that crews receive no training to search for pet alert stickers, so a decal is one clue rather than a protocol. Hold that thought for the next section, because it applies with more force to a phone than to a door.

If you want the sticker itself, our printable rescue alert sticker builds one, and the trade-off it makes is ASPCA’s, stated openly.

Nobody Promised You That Anyone Will Look

Apple’s guide describes a first responder reaching a Medical ID. That sentence tells you the route exists. It does not tell you that responders check phones for animal information, that any agency trains them to, or that a lock screen is part of any response protocol, and we found no source establishing any of those three things. That is a statement about the sources we opened on August 13, 2026, which were Apple’s Medical ID support article and its iPhone User Guide articles on Medical ID and wallpaper, Apple’s Personal Safety User Guide page on emergency calls, Google’s Android Help and Pixel Phone Help emergency articles, ASPCA’s disaster preparedness page, Humane World for Animals’ pet emergency plan page, and the Safety Net Project pages named later on. It is not a claim about the whole literature, and if a fire service or EMS agency publishes such a protocol, we did not find it.

The parallel on the sticker is the one worth reasoning from, since it is the closest thing we have to evidence. A door decal is bigger, older, more standardized and physically in a responder’s path, and even there a firefighter’s own account is that it gets no training and no protocol. A lock screen is smaller, newer, entirely non-standard, and requires a person to pick up and interact with a stranger’s phone during an emergency.

So build this artifact for the audience that will actually use it. Not a rescue system. A person. A neighbor, a coworker, a bystander, the person at the front desk of the hospital, someone who found a phone on the ground and is decent enough to try. Those people will read a lock screen. Write it for them, and then the fact that a paramedic could also read it becomes a bonus rather than the plan.

Medical ID Is A Human Medical Record, And That Matters

Here is a hazard specific to the iPhone route that follows from putting two published facts next to each other.

Apple’s iPhone User Guide describes the purpose of the record: “A Medical ID provides information about you that may be important in an emergency, like allergies, medical conditions, and your emergency contacts.” Apple’s support article says a Medical ID lets responders “see information like allergies and medical conditions as well as who to contact in case of an emergency.” Google’s Android Help page puts it in its own words, saying you can add “personal emergency info to your phone’s lock screen, like your blood type, allergies, and medications.”

Every example field in those three sentences is a medical fact about the phone’s owner, and Apple names first responders as the audience it built them for.

Now put that against what this page is about. If you fill the notes area of a Medical ID with feeding schedules, animal names and a paragraph about a cat under a bed, you have put non-medical text into the one screen both companies describe as holding your medical facts. No page we opened publishes a rule against that, and we are not inventing one. What we will say, as our own conclusion from those two facts sitting next to each other, is this: keep the animal line short and keep it last. One sentence naming the animals and a phone number is a small tax on a medical record. Three paragraphs of household logistics buried above a penicillin allergy is a real cost paid by the person the field was built for, which is you.

If your pet information needs more room than one sentence, it does not belong in Medical ID. It belongs on the paper artifacts that have room for it: our printable pet emergency wallet card for the copy that travels in your wallet, the fridge pet alert card for the copy a caregiver reads in your kitchen, and a crate or kennel emergency ID card for the copy that stays with the animal.

The Out-Of-Area Contact Is Another Person

Every version of this artifact tells you to add a second contact, and every version skips the part where that contact is a human being with their own phone, their own household and their own reasons for not wanting their number published to strangers.

They cannot see what you wrote. That is the asymmetry. Your lock screen is a page about them that they will never read, sitting in the pocket of someone they are not with.

Apple raises the same concern from the security side, in the Personal Safety User Guide, about Emergency SOS contacts: “With Emergency SOS, you can quickly and easily call for help and alert your emergency contacts. Because of this, it’s important to make sure that the person or people assigned as emergency contacts are people you trust.”

Apple’s sentence is about your trust in them. Ours runs the other direction, and we mark it as ours: ask them first, tell them exactly what you are putting on the screen and where it can be read from, and use a first name and a number rather than a full name, and never their address. Ask again if their situation changes, because a person who was fine with this two years ago may now have a reason not to be, and they have no way to tell you about a screen they cannot see.

The same courtesy applies to the caregiver arrangements on our dog walker emergency card checklist and in the pet sitter emergency instructions tool, both of which involve writing down someone else’s details for a stranger to read.

If Someone Is Looking For You

This section is short because the honest version is short and because improvising safety advice here would be worse than none.

If you are dealing with domestic violence, stalking, a protective order, or anyone who has reason to search for you, then everything on this page inverts. A lock screen is a publication to whoever holds the phone. So is a wallpaper, so is a Medical ID with Show When Locked turned on, and so is Android emergency info with Show when locked turned on. A phone can be picked up off a table. Google’s own caution is the plainest statement of the risk anyone quoted on this page publishes: “Anyone who picks up your phone can find your lock screen message and emergency information even if your phone is locked.” Google also states that the setting can be turned off, in the Safety app on Android and in the Personal Safety app on a Pixel.

We are not the right source for what to do next, and we are not going to write a safety plan we are not qualified to write. The Safety Net Project at the National Network to End Domestic Violence is. It describes its own scope this way, on the front page of its own site, read August 13, 2026: “Safety Net focuses on the intersection of technology and abuse, and we work to address how that abuse impacts the safety and privacy of survivors. Our team provides expert training and technical assistance, creates and disseminates resources, and influences conversations on technology abuse and safety globally.”

Their published scope is worth stating from their own index rather than from an assumption about it. The survivor toolkit index we read lists resources including a Technology Safety Plan, a Survivors’ Guide to Phones, an iPhone Privacy & Security Guide, Password Safety, a Guide to Securing Accounts & Devices, a Stalkerware Overview, Phone Stalkerware & Safety for Survivors, and a Survivors’ Guide to Location Tracking. We did not find a Safety Net resource specifically about lock-screen emergency information in that index, so we are pointing you to an organization whose published expertise covers phones, location tracking, stalkerware and account security, and not claiming they have written the exact page you are looking for.

That index also lists national hotlines, including the National Domestic Violence Hotline at 1-800-799-7233. Every Safety Net page we opened also carries a quick-exit link for readers worried about someone seeing that they visited.

For the animal half of that situation, the practical point is narrower and it is ours: every artifact on this site that publishes an animal’s existence to strangers deserves the same three-question test above, and the ones that publish where the animal lives deserve it first.

The Case This Page Cannot Cover: A Dead Phone

Everything above assumes a phone that turns on. Plan for the version where it does not, because that version is common in exactly the disasters this site is about.

Google publishes two sentences that describe the failure honestly. On the emergency contacts feature: “If you don’t have a SIM card or eSIM on your phone, you may be able to place emergency calls, but you won’t be able to call your emergency contacts.” And on emergency location sharing: “You won’t be able to share your real-time location with your emergency contacts unless you have a Wi-Fi or mobile network internet connection.” By Google’s own account, the phone’s emergency features degrade when the SIM or the network goes, and both of those go in the events this site is about.

The accounts a pet owner needs in the first forty-eight hours after a separation are the ones stacked behind that phone. The microchip registry that holds the record a shelter’s scanner points at. The tracker app. The pet insurer. The vet’s client portal. The boarding facility. Every one of those has an account, and the account has a password manager entry, and the password manager is on the phone, and the two-factor code arrives by text to a number that has no signal.

There is no clever fix for this and this page is not going to invent one. What there is, is preparation, and it has three parts.

Read each provider’s own published recovery path before you need it. Not a summary, not a forum post, and not a scheme we made up. The company holding your account publishes what it will accept from a person who cannot log in, and that document is the only one that binds it. Write down what it asks for. Some will want an account number, some will want a chip number, some will want an email address you can still reach.

Get the numbers onto something that does not need charging. Our printable pet emergency wallet card exists for this and it rides in a wallet rather than a battery.

Fix the registry side in advance, because that one has a known slow path. Our microchip registration audit covers the registry lookup, what to do when a registry goes out of business with your record inside it, and why transfers between owners can take real calendar time. That page owns the lookup and the contact chain; this one just tells you to go do it before the season starts. If you are weighing a scannable tag against the chip, our QR tag versus microchip comparison settles which one survives which failure.

Note what the tag itself assumes, which is the join people miss. Humane World for Animals recommends, in its own words, that cats and dogs wear “collars with up-to-date identification tags, including your cell phone number”, and adds the reason: “The average person who finds your pet won’t be able to scan for a chip, but they will probably be able to read a basic tag!” ASPCA words its tag advice differently, stating that a pet’s ID tag “should contain his name, telephone number and any urgent medical needs.” Two organizations, two materially different field lists, and we are quoting them separately rather than merging them into one sentence they did not both write.

Now put either of them next to a dead phone. The number on the tag is a number that has to ring. If the only number on your animal’s tag is the cell phone that is currently sitting in a puddle, the tag is a piece of metal with a dead end printed on it. That is the join, and we could not find anyone publishing it, so we are stating it as ours: whatever number you put on your lock screen and on your animal’s tag, at least one of the numbers in that pair should be a person who is not in the disaster with you.

What To Actually Write

A worked example, written to the field list above. Adapt it, do not copy it as-is, and read the two notes underneath before you type anything.

[your first name]. [a number that reaches you]. Two cats and a dog depend on me. If I am hurt, please call. Vet: [clinic name], [clinic number]. Second contact: [leave this blank until that person has said yes]

Four things about that block. Every field is a placeholder, because the point is the shape rather than the words. The vet line is the one field on it that is not free, because a clinic has a public address, so leave it off if anyone has reason to look for you specifically, not only for the animals. The second contact line is deliberately left empty, because a second person’s details are not a default anyone else gets to set for you, and it is filled in after you have asked them rather than before. And there is no home address on it anywhere, which is the point of the whole page.

If you are making a wallpaper image rather than using Medical ID or Android emergency info, cut it further. The image is readable at a glance across a coffee shop table. A first name, one phone number and one sentence about the animals is the whole safe payload.

Setting It Up Without Publishing More Than You Meant To

  • Decide which mechanism you are actually using. A wallpaper image, a lock screen text message, an iPhone Medical ID with Show When Locked, or Android emergency info with Show when locked. They expose different amounts and the first two expose the most.
  • Read the setup steps on Apple’s or Google’s own page for your version. Apple publishes separate iOS 26, 18, 17 and 16 editions of the Medical ID guide article. Google’s Android Help article says some steps need Android 12 or later and its Pixel article says Android 13 or later. A screenshot in a blog post is not your phone.
  • Write the fields from the list above, not from memory. First name, a number that reaches you, a second number that is not yours, the vet clinic, one sentence about the animals.
  • Delete the address. If you typed one, delete it. If you made an image with one on it, remake the image.
  • Ask the second person before their number goes on. They cannot see what you published about them.
  • If you use Medical ID, keep the animal line to one sentence and put it last, so the medical record still works as a medical record.
  • Now test it the only way that tells you the truth. Lock the phone. Hand it to somebody else. Ask them to read out loud everything they can reach without your passcode, including anything they can get to from the Emergency screen. Whatever they read is what you have published. If any of it surprises you, that is the finding, and it is cheaper to find it on your kitchen table than in a shelter parking lot.
  • Put the same numbers on paper. The phone is the thing that dies.
  • Re-read it after anything changes. A new animal, a new vet, a contact who moved, a household that changed shape. A lock screen that describes a household you no longer have is the phone version of a rescue sticker for a pet who moved out three years ago.

Where To Go Next

This page belongs to the pet evacuation kits pillar, and it is the piece of the kit that lives in your pocket instead of in a bag. The rest of the identification and information layer splits three ways.

The copies that stay at the house. The fridge pet alert card is the instruction sheet a caregiver reads standing in your kitchen, with the feeding and dosing detail a lock screen has no room for. The printable rescue alert sticker faces outward from your door, and how firefighters know pets are inside is honest about what a sticker does and does not accomplish.

The copies that travel with the animal. The crate and kennel emergency ID card rides on the carrier, the QR tag versus microchip comparison settles which identifier survives a lost collar, and the microchip registration audit makes sure the record behind the chip has your current contacts in it.

The moments this artifact is built for. If the order comes while you are at work, getting your pet out when you are not home is the playbook, and it is the scenario where a stranger reading your lock screen stops being hypothetical. If the animal is already missing, finding a lost pet after a disaster is the search sequence. The rest of the household planning sits on our pet emergency playbooks hub.

Then do the two-minute version tonight. Open the feature, write one sentence with a first name, one phone number and the animals, leave the address off, lock the phone and hand it to someone else to read back. You will know within a minute whether what you published is what you meant to publish, which is more than most people can say about the most-read screen they own.

Frequently asked questions

Can first responders see pet information on my phone lock screen?

They can reach it, and that is a different claim from saying they will look. Apple's support article on Medical ID, published March 10, 2026 and read August 13, 2026, states that Medical ID "helps first responders access your critical medical information from the Lock screen, without needing your passcode." Apple's iPhone User Guide describes the exact route, noting that a first responder views a Medical ID from the Lock Screen "by swiping up or pressing the Home button (depending on your iPhone model), tapping Emergency on the passcode screen, then tapping Medical ID." Google's Android Help article states that emergency info can be shown when the screen is locked. What we did not find in any source we opened is evidence that responders are trained to check a lock screen for animal information, or that checking one is part of any published protocol. Our own reporting on a closely related question found the same gap for pet rescue stickers, where a firefighter's published account is that crews receive no training to look for them. Plan the lock screen as a message to whoever ends up holding the phone, which includes ordinary people, and not as a channel into an emergency response system.

Should I put my home address on my phone lock screen so someone can go let my dog out?

No. This site recommends against putting a home address on a lock screen, on a lock-screen wallpaper image, in an iPhone Medical ID, or in Android emergency info, and the reason belongs in the same breath as the rule. A lock screen is readable by anyone holding the phone, and Google states this outright on its own help pages: "Anyone who picks up your phone can find your lock screen message and emergency information even if your phone is locked." An address paired with a note that animals are home alone tells a stranger that a specific house is unoccupied, which is exactly the situation an evacuation creates. Give a phone number instead, so the person who wants to help has to reach a human who can decide what to tell them. This is our own reasoning rather than a published standard. Google publishes the hazard in one sentence and Apple's security documentation notes that Medical ID trades safety against privacy, but none of the pages we opened works that consequence through to a field-by-field list, so weigh the rule above as reasoning rather than as one handed down by an agency.

How do I add emergency information to an iPhone lock screen?

Apple publishes two sets of instructions and the menus differ by iOS version and device, so read Apple's own page for the version you are running rather than following steps from memory. Apple's support article at support.apple.com/en-us/105072, published March 10, 2026 and read August 13, 2026, says to open the Health app, tap the Summary tab, tap your profile picture in the upper corner, tap Medical ID underneath it, and then, in Apple's words, "To make your Medical ID available from the Lock screen on your iPhone, turn on Show When Locked." The iOS 26 edition of the iPhone User Guide gives a shorter version: "Tap Edit, scroll to the bottom, then turn on Show When Locked and Emergency Call." The same guide is published in separate iOS 18, iOS 17 and iOS 16 editions at their own addresses, which is a good reminder that a screenshot in a blog post may not match your phone. Medical ID is designed to hold the phone owner's own medical facts, so treat any pet information you add as a small addition rather than as a replacement for what a clinician needs.

How do I add emergency information to an Android lock screen?

Google publishes it in two places with two different version notes, so check the page that matches your phone. Google's Android Help article "Get help during an emergency with your Android phone" states "Some of these steps work only on Android 12 and up", while the Pixel Phone Help article states "Some of these steps work only on Android 13 and up." Both were read August 13, 2026. The Android Help steps are to open the Safety app, sign in to your Google Account, tap Your info, and add your emergency info under Medical information and Emergency contacts, then reach the switch Google words as showing your emergency information when your screen is locked, by tapping "Emergency info access" and then "Show when locked". Google documents a separate lock screen text field as well, reached in the Settings app under Display, then Lock screen, then Add text on lock screen. Google attaches an explicit caution to all of it: "Anyone who picks up your phone can find your lock screen message and emergency information even if your phone is locked."

Is a lock-screen wallpaper image with my pet's information private in any way?

No, and it is the most exposed of the options. A wallpaper is an image, so it appears the moment the screen wakes, with no tap, no menu and no access control of any kind between a passerby and every word printed on it. Apple's iPhone User Guide describes the wallpaper simply as something you set on the Lock Screen and the Home Screen. Android's emergency information and iPhone's Medical ID at least sit behind a deliberate action: Apple's guide describes reaching a Medical ID by swiping up or pressing the Home button, tapping Emergency on the passcode screen, and then tapping Medical ID. None of the three is private, secure or responder-only, and no one should describe them that way, because being readable without authentication is the entire function. If you use a wallpaper image, put on it only what you would be comfortable having read aloud by a stranger in a parking lot, which in practice means a first name, a phone number and the fact that animals depend on you, with no address.

What do I do about my pet's accounts if my phone is dead or has no signal?

Assume it will happen and write the routes down on paper before the storm. Google states on its own help page that "If you don't have a SIM card or eSIM on your phone, you may be able to place emergency calls, but you won't be able to call your emergency contacts", and separately that "You won't be able to share your real-time location with your emergency contacts unless you have a Wi-Fi or mobile network internet connection." Both were read August 13, 2026. The accounts a pet owner reaches for in the first hours after a separation live behind that same phone: the microchip registry, the tracker app, the insurer, the vet portal, the boarding facility. Each of those companies publishes its own account recovery path, and the only safe version of that information is the one the company itself publishes, read before you need it and written on a card that does not need charging. Our printable pet emergency wallet card gives you somewhere to put the numbers, and our microchip registration audit covers the registry half of the problem in detail.

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Sources

We are not veterinarians, and we would rather you check these than take our word for anything. Every claim above traces to one of them. For your own animal, your vet is the expert, not this page.

  1. Apple Support — Set up your Medical ID in the Health app on your iPhone (published March 10, 2026; read August 13, 2026) (opens in a new tab)
  2. Apple — iPhone User Guide, Set up and view your Medical ID (iOS 26 edition; read August 13, 2026) (opens in a new tab)
  3. Apple — iPhone User Guide, Change the wallpaper on iPhone (read August 13, 2026) (opens in a new tab)
  4. Apple — Personal Safety User Guide, Make an emergency call or text on iPhone or Apple Watch (read August 13, 2026) (opens in a new tab)
  5. Apple Platform Security — Protecting access to user's health data (Medical ID storage class and the safety/privacy trade-off, in Apple's own words; read August 13, 2026) (opens in a new tab)
  6. Google — Android Help, Get help during an emergency with your Android phone (read August 13, 2026) (opens in a new tab)
  7. Google — Pixel Phone Help, Get help in an emergency using your Pixel phone (read August 13, 2026) (opens in a new tab)
  8. ASPCA — Disaster Preparedness (rescue alert sticker and ID tag guidance; read August 13, 2026) (opens in a new tab)
  9. Humane World for Animals — Pet emergency plan and disaster preparedness (read August 13, 2026) (opens in a new tab)
  10. National Network to End Domestic Violence — Safety Net Project home page (the project's own scope statement; read August 13, 2026) (opens in a new tab)
  11. NNEDV Safety Net Project — Technology Safety and Privacy: A Toolkit for Survivors (resource index; read August 13, 2026) (opens in a new tab)