QR pet tag or GPS tracker: which does your pet need?
The short answer
They do different jobs, and neither replaces a microchip. In the UK, dogs must be microchipped by eight weeks old, and in England cats must be microchipped by 20 weeks. In Great Britain, dogs in public must also wear a collar tag showing the owner’s name and address. A QR tag helps whoever finds your pet contact you quickly. A GPS tracker shows where your pet is, but needs charging and often a subscription.
Three layers of pet identification
- Microchip. A tiny implant under the skin with a unique number linked to your details on a database. It needs a scanner, usually at a vet, rescue centre or council, and it’s permanent.
- Collar tag. Visible identification anyone can read. A QR tag is a version that a finder can scan with a phone to reach you.
- Tracker. An electronic device on the collar that helps you locate your pet, using GPS and a mobile network or Bluetooth and nearby phones.
The first is the legal foundation, the second is the fast route home and the third is optional extra help.
What UK law requires
| Requirement | Dogs | Cats |
|---|---|---|
| Microchip | Required across the UK by 8 weeks old, registered on an approved database | Required in England by 20 weeks old (since 10 June 2024), including indoor cats. Optional in Scotland, Wales and Northern Ireland |
| Collar and tag | Required in public places in Great Britain, with the owner’s name and address, under the Control of Dogs Order 1992 (some working dogs are exempt) | Not legally required |
| Penalty for no microchip | Fine of up to £500 | Fine of up to £500 in England |
| Keep details up to date | Yes, e.g. when you move house | Yes, where microchipping is required |
Sources: GOV.UK, Defra and the Control of Dogs Order 1992. Northern Ireland has separate dog control rules, so check locally.
QR tag vs GPS tracker, side by side
| QR pet tag | Bluetooth tracker | GPS tracker | |
|---|---|---|---|
| Main job | Helps a finder contact you | Helps you locate your pet nearby or via passing phones | Shows your pet’s location on a map |
| Needs someone to find the pet? | Yes | Partly | No |
| Power | None | Battery (usually long-lasting) | Rechargeable battery, often charged every few days |
| Ongoing cost | Usually none or low | Usually none | Often a monthly subscription |
| Size and weight | Small, light | Small | Larger. Check it suits your pet’s size |
| Replaces a microchip? | No | No | No |
Which suits your pet?
- A dog who stays close on walks: microchip plus a legal collar tag. A QR tag can speed up contact if they slip their lead.
- A dog who bolts or roams off-lead: add a GPS tracker. Location matters more than contact when they’re running.
- An indoor or garden cat (England): microchip is required. A tag is optional and only on a quick-release collar.
- An adventurous outdoor cat: microchip first. If you use a collar, choose a quick-release one, as the RSPCA advises, and weigh up whether a small tracker is comfortable and safe for your cat.
If your pet goes missing
- Search nearby straight away and call your pet’s name. Cats often hide close to home.
- Contact your microchip database to report them missing and confirm your details are correct.
- Call your local council’s dog warden service (for dogs), nearby vets and local rescue centres.
- Check your tracker app if you have one, and share clear photos in local community groups.
Limitations
Collars and tags can come off. That’s why the law relies on microchips. A QR tag only helps if someone finds your pet and scans it. Bluetooth trackers depend on phones passing nearby, and GPS trackers need charge and mobile signal, and can still be lost with the collar. None of them keeps a pet safe on its own: secure gardens, recall training and neutering do more to prevent wandering.
Sources
- Get your dog or cat microchipped · GOV.UK
- Treasured pets now safer as microchipping for cats becomes compulsory · GOV.UK – Defra
- The Control of Dogs Order 1992, article 2 · legislation.gov.uk
- Cat microchipping · RSPCA
Written and reviewed by Tagsy Editorial. General guidance only; always check official advice for your situation.