Pequeño Placa de identificación
Designed by Dr Duncan
    Safety & Tracking

    Placa de identificación

    A silicone tag any phone can scan or tap: the finder sees your details, you get an alert. No battery, no subscription.

    5.0 out of 5.0, 16 reviews
    Pequeño Placa de identificación Aguacate
    $25.00 AUD
    Color Aguacate Which size, and which collar? Read the guide

    Tamaño del accesorio Pequeño

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    • Faulty or wrong item? Covered within 7 days

    Vet designed

    Designed by emergency vet Dr Duncan Houston. Worn at home by Gary, a Ragdoll in the Sardines, on a breakaway collar, indoors.

    Why this tag

    • Designed by Dr Duncan Houston
    • Worn by Gary
    • Any phone, no app
    • No battery, no subscription

    Explainer

    Dr Duncan explains the Cat Smart ID Tag

    Back to sizes and colours

    Filming next

    Read the script
    1. 0:00 Too many of the microchips I scan lead to an old number. Moved house, new phone, split up, and the registry has the details from the day she was chipped. And a finder in the street cannot read a chip at all.
    2. 0:10 This tag, anyone can read. Point a phone camera at the code, or tap it, and her profile opens in the browser. No app for the finder, nothing to sign up for: your numbers, her name, the notes you chose, and a button that says she is found.
    3. 0:22 You get the alert the moment it is scanned. And when your number changes, you change it in the app in seconds, and the tag on her collar is up to date the same moment. No battery, no subscription, ever.
    4. 0:34 It goes on a breakaway collar and nothing else, because a cat collar has to open if it catches. Two fingers flat underneath, checked weekly. And the tag is on top of her microchip, not instead of it.
    5. 0:46 If she never goes out, she is the one this is for. The window in a heatwave, the tradie who left the door, the move. An indoor cat out for the first time hides, and the person who finds her a week later has a phone and no scanner.
    6. 0:54 Gary wears the Sardines, on a breakaway collar, indoors.

    In this video

    1. 0:00 The old number on the microchip
    2. 0:10 Scan it: any phone, no app
    3. 0:22 The alert, and changing your details
    4. 0:34 Breakaway collar, two fingers
    5. 0:46 Indoor cats get out too
    6. 0:54 Worn by Gary

    How it works

    Why a tag any phone can read beats a number only a vet can

    Illustrated woman kneeling beside a cat wearing the Avocado Cat Smart ID Tag, holding up her phone with the cat's public profile open in the browser, the details blurred

    Any phone, no app, straight to you

    The finder points a phone camera at the QR code on the back, or taps the tag with a phone that has NFC, and her profile opens in the browser: no app to download, nothing to sign up for.

    • What you chose to showThey see what you chose to show, your phone numbers, her name, the medical note that says she is on medication, and a button to tell you she is found.
    Illustrated woman sitting with her arm round a cat wearing a Cat Smart ID Tag QR side out, her phone showing the Ask A Vet app's scan alert with a Get directions button

    Alerts, and details that never go stale

    When the tag is scanned you get a notification in the Ask A Vet app, with the scan's location where the finder's phone shares it.

    • Live on the collar in secondsAnd because the tag points to a profile rather than carrying an engraving, a new phone number, a new address or a new medical note takes seconds to change and is live on the collar the same moment.
    Illustrated man kneeling and holding up a purple breakaway collar, a cat beside him wearing the Avocado Cat Smart ID Tag

    Silent silicone, on a breakaway collar

    The charm is soft silicone, so it does not jingle against the buckle, and it clips to the D-ring of the collar with a spring ring.

    • A breakaway collar and nothing elseIt goes on a breakaway collar and nothing else: a cat collar has to open under her weight if it catches.
    • The Slide-On threads flatFor the cat who chews anything that dangles, the Slide-On threads flat onto the strap with nothing hanging at all.

    Size guide

    Two sizes, fourteen designs, and the collar it goes on

    • Selected

      Small

      About 10 g (admin); to be confirmedThe cat size: most cats and every kitten

    • Selected

      Medium

      About 10 g (admin); to be confirmedA larger tag: a wide collar or a big cat

    • Small for a cat, whatever her size: the tag hangs below the collar, and a charm that swings gets chewed and caught. Medium is a larger tag for a wide collar, easier to scan at arm's length, and for the big cat who does not notice it. The measurements of both print here once one of each is on the bench.

    • The Slide-On for the cat who chews or bats at anything that dangles, and for a collar with no D-ring: it threads flat onto the strap. It needs a strap it fits, and the collar widths each size takes print here once measured.

    • Breakaway collar only, fitted with two fingers flat between collar and neck, checked weekly, and checked every few days on a kitten, who grows out of a collar in a month. The tag is on top of the microchip, not instead of it.

    Illustrated cat wearing the Avocado Cat Smart ID Tag, surrounded by all fourteen Cat Smart ID Tag designs including the Slide-On

    Specifications

    How it works
    A printed QR code on the back and an NFC chip inside. A phone camera reads the code; a phone with NFC reads the chip with a tap. Either opens her Ask A Vet profile in the browser; no app for the finder
    The profile
    Set up in the Ask A Vet app (free) when you activate the tag: her name, your contacts, medical notes and what you choose to show a finder. Free for life; no subscription for the tag. The app's Premium plan is separate and optional
    Alerts
    A notification when the tag is scanned, with the scan's location where the finder's phone shares it (the listing). What the finder sees and what you are sent are confirmed with the app team before this prints
    Battery
    None. The QR is printed and the NFC chip is passive; nothing to charge, ever
    Material
    Soft silicone charm (the two-tag bundle's listing), a spring clip ring (steel, to be confirmed). The Slide-On is a silicone strip with the code on it
    Sizes
    Small and Medium; the listing calls the option Accessory size and gives no dimensions. Both are measured before this prints, with the collar widths the Slide-On takes
    Weight
    About 10 g on every variant in admin; to be confirmed on the scale
    Designs
    Avocado, Boba, Chocolate Pink, Chocolate Purple, Coffee, Donut, Dumpling, Ramen, Sakura Matcha, Salmon Sushi, Sardines, Black, White, and the Slide-On
    Collar
    Not included. A breakaway cat collar with a D-ring for the charms; a strap the Slide-On fits
    In the box
    One tag, the clip ring and setup instructions (the two-tag bundle's pack list); to be confirmed against the box
    Designed by
    Dr Duncan Houston, emergency veterinarian, Ask A Vet and PURRZ™
    Made in
    To be confirmed

    How to

    How to activate it, and what to put on it

    • Illustrated man on a couch with a cat, holding his phone in one hand and the Avocado Cat Smart ID Tag up in the other

      Activate it before it goes on her

      Scan the tag yourself. It opens the setup page: download the Ask A Vet app, create her profile and link the tag. Ten minutes on the couch.

    • Illustrated man kneeling beside a cat wearing the Avocado Cat Smart ID Tag, pointing at the owner and pet information fields on his phone's public profile screen

      Put on it what a finder needs

      Two phone numbers, one of them not yours. Her name. The medical line that matters: on medication, indoor only, do not feed. Not your address.

    • Illustrated man holding a purple collar open in one hand and steadying a cat's collar with the other, the Avocado Cat Smart ID Tag hanging from its D-ring

      Onto a breakaway collar

      Clip ring through the D-ring; the Slide-On threads onto the strap. Two fingers flat under the collar, and the collar opens if you pull it hard.

    • Illustrated man and woman kneeling either side of a cat wearing a Cat Smart ID Tag QR side out, his phone showing the scan alert and hers the public profile

      Test it with someone else's phone

      Have a friend scan the code and tap the tag. Check the profile shows what you meant, and check the alert arrives on yours.

    • Illustrated man crouching behind a cat, holding the Avocado Cat Smart ID Tag QR side out in one hand and his phone with the public profile open in the other

      Keep it current

      A new number, a move, a new medication: change it in the app the same day. Check the collar weekly and the charm for chew marks.

    Vet noteDr Duncan Houston, emergency veterinarian

    A cat collar must be a breakaway collar, one that opens under her weight if it catches on a branch or a fence, and this tag goes on nothing else; a fixed collar with a dangling tag is a strangulation risk, and the emergency room sees the result. Fit it with two fingers flat between collar and neck, check it weekly, and check a kitten's every few days, because she grows out of it in a month. The tag is on top of the microchip, not instead of it: the chip is what a vet or a shelter reads when she arrives without a collar, so keep the registry's phone number current too. A cat who chews at the charm gets the Slide-On, and a charm with a chewed edge comes off before a piece of it is swallowed. If she goes outside, a bell on the collar is a separate decision, and the birds would like you to make it. A collar that has caught, or a swallowed piece of charm, is a same-day vet visit.

    Dr Duncan Houston outdoors holding Gary, his Ragdoll
    Dr Duncan Houston Emergency veterinarian and founder of PURRZ™

    Why I designed it

    The number on her collar should be the one you have now.

    Too many of the microchips I scan in the emergency room lead to an old number. The owner moved, changed phones, split up, and the registry still has the details from the day she was chipped. A finder in the street cannot read a chip anyway. This tag fixes both: anyone with a phone scans or taps it and sees what you chose to share, you get an alert that she has been found, and when your number changes you change it in the app in seconds. No battery, no subscription, and it is silent on the collar. Gary wears the Sardines, on a breakaway collar, indoors.

    Compare the range

    Cat Smart ID Tag vs the other ways she gets home

    See all safety and tracking
    Cat Smart ID Tag vs the other ways she gets home
    This productCat Smart ID TagA microchipAn engraved tagCat GPS Tracker2-Cat Smart ID Tag Bundle
    What it doesA finder scans or taps it and sees your details; you get an alertA vet or shelter scans it with a reader and looks you up in a registryA finder reads the number engraved on itYou see where she is on the map, with a fence alert; its ID part does what this tag doesTwo of these tags, one per cat
    Who can read itAnyone with a phone camera or NFC, no appOnly a vet, shelter or council with a scannerAnyone who can read the engravingYou, in the appAnyone with a phone
    Changing your detailsIn the app, in secondsThrough the registry, which most people forgetA new tagIn the appIn the app
    BatteryNoneNoneNoneRechargeable, 30 days or more per its listingNone
    Ongoing costNone: the profile is free for lifeNone after registration, depending on the registryNoneA subscription for the GPS and health features; the ID part is freeNone
    Sound on the collarSilentNone; it is under the skinJingles against the buckleTo be confirmedSilent
    PriceFrom $25.00 AUD$145.00 AUDFrom $40.00 AUD
    Reviews Rated 5.0 out of 5.0 from 16 reviews Rated 5.0 out of 5.0 from 12 reviews Rated 5.0 out of 5.0 from 8 reviews
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    Reviews

    Cat Smart ID Tag reviews

    Rated 5.0 from 16 reviews on Judge.me.

    Rated 5.0 out of 5.

    Based on 16 Judge.me reviews

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      • Quality construction withstands daily wear without fading or deterioration. This simple solution provides remarkable peace of mind for outdoor accessing cats.

        Tim ThompsonJune 2026

      • The battery free design eliminates maintenance concerns while providing reliable identification. Anyone finding my cat can immediately contact us through the tag.

        LuvJune 2026

      FAQ

      Cat Smart ID Tag questions, answered by a vet

      Shipping and returns

      Dispatch
      Tracking sent when it ships; dispatch and delivery times by country are on the shipping page.
      Delivery
      Tracked, worldwide. International orders may attract duties.
      Returns
      Faulty, damaged or incorrect items are covered within 7 days of delivery. Email hello@purrz.com to start.
      Shipping and delivery detailsHow returns work
      How does it work?

      A finder points a phone camera at the QR code on the back, or taps the tag with a phone that has NFC, and her profile opens in the browser: your numbers, her name, the notes you chose to share, and a button to tell you she is found. You get the alert in the Ask A Vet app. Nothing to download for the finder, nothing to charge, and before you activate it the same scan opens the setup page.

      Do I need the app, or a subscription?

      You need the free Ask A Vet app once, to activate the tag and set up her profile; the finder needs nothing. There is no subscription for the tag: her profile and the alerts are free for as long as she wears it. The app has a Premium plan for vet chat and the tracker features, and it is separate and optional; nothing about the tag changes if you never take it.

      Is it instead of a microchip?

      No, on top of it. The chip is under her skin and only a vet, a shelter or a council reader can read it, which means she has to be picked up and taken somewhere first; a tag gets her home from the street the same afternoon. Keep both, and keep the registry's phone number current, because the chip only works if the number it leads to is yours.

      Which size, and what is the Slide-On?

      Small for a cat, whatever her size: the charm hangs below the collar and a big one swings and gets chewed. Medium is a larger tag for a wide collar or a big cat, and easier to scan at arm's length. The Slide-On is a flat strip that threads onto the collar strap with nothing dangling, for the chewer and for a collar with no D-ring. The dimensions and the collar widths print here once measured.

      What collar should it go on?

      A breakaway cat collar, and nothing else. Cats climb and squeeze through things, and a collar that does not open under her weight is a strangulation risk; the tag adds a dangle to catch on. Fit it with two fingers flat between collar and neck, check it weekly, and check a kitten's every few days. If she goes outside, a bell on the collar is a separate decision that the local birds would like you to make.

      My cat never goes outside. Does she need one?

      Indoor cats are the ones who get lost worst, because nobody knows the neighbourhood, least of all the cat. The open window in a heatwave, the tradesman who left the door, the move to a new house, the carrier that opened at the vet: an indoor cat out for the first time hides, and the person who finds her a week later has a phone and no scanner. The tag is for that afternoon.

      What if it arrives damaged or will not scan?

      Email hello@purrz.com within 7 days of delivery with a photo and your order number; faulty, damaged or incorrect items are covered and we pay the return shipping when the error is ours. If the QR will not scan, try the NFC tap and clean the code; if neither works, the tag is replaced. A charm she has chewed through is replaced at our discretion and comes off the collar first.

      Part of the Ask A Vet ecosystem

      Her profile lives in the Ask A Vet app. The tag is the door to it.

      PURRZ™ is the cat product arm of Ask A Vet, Dr Duncan Houston's animal health platform. The tag opens her profile; the same app tracks her weight, vaccinations and symptoms, sets worming and flea reminders, and puts a certified vet in the chat when something is not right.

      Get the Ask A Vet app

      • Lost-cat profile

        What a finder sees when they scan the tag.

      • Health tracking

        Weight, vaccinations, medications, symptoms.

      • Certified vet chat

        Talk to a real vet when something is not right.

      • Reminders

        Worming, flea and tick, vaccinations.

      Guides from the emergency room

      All articles
      Placa de identificación Aguacate / Pequeño
      $25.00 AUD