Privacy

What should a dog tag actually reveal?

The phone number on an engraved tag is personal data — and it's visible the moment anyone picks up the tag. Here's how a modern tag can respect privacy and findability at the same time.

2026-05-07 · 4 minute read

The hidden privacy problem with traditional tags

Most pet owners get a tag engraved with their phone number and consider the privacy question settled. It isn't. An engraved phone number is personal data and once it's on the tag, you've lost control of it:

Anyone who picks the tag up has your number permanently.
The tag could be photographed and shared on social media without your consent.
Scammers run callbacks against numbers from "found dog" posts and lost-pet flyers.
If the dog ends up at a shelter or vet, the number gets logged in their records.
If you ever change your number, the tag is wrong and you don't always remember to update it.

Most of the time none of this matters. But the failure modes compound: a stolen wallet plus an engraved tag plus a phone-number lookup gives a stranger your full identity in two minutes.

What a finder actually needs to know

Strip the question to its essentials: what's the minimum information that lets a stranger return your dog quickly?

Confirmation that this dog has an owner who's looking for them (so the finder doesn't assume "stray, must be saved").
The dog's name (so the finder can speak to them calmly).
Anything urgent the finder must know — medication, allergies, "scared of strangers", "dog-friendly".
A way to contact you that doesn't put you at risk.

That's it. A finder does not need your full name, your home address, your email, or your phone number. They just need a working contact channel.

How PawBack approaches privacy

We thought about this carefully because we wanted to use the tag ourselves. Here's what a finder sees vs. what stays private when someone scans a PawBack tag:

Always shown

Pet's name, breed, photo
Medical notes (medication, allergies, vaccinations)
Friendly-with notes ("good with children, scared of bicycles")
A contact form that messages the owner privately through our service

Hidden by default

Owner's name — never shown publicly
Owner's email — never shown publicly
Owner's home address — never shown publicly
Owner's phone number — hidden by default; the owner can opt to make it visible if they prefer

The contact flow

The finder fills a contact form. We relay the message to the owner as an email and a push notification. The owner can choose to reply with their phone number, an in-person meet location, or by email — at their discretion.

This means the owner controls when, how, and to whom they share contact information. Not the tag.

What about Tasso, microchips, and the German registry?

In Germany, the Tasso registry holds your details linked to your dog's microchip. That information is only accessible by Tasso staff and verified vets — not the public. So the microchip is genuinely private, but it's also useless without a chip reader, which only vets and shelters have.

A modern QR/NFC tag complements the chip: the chip is the formal registry, the tag is what makes the next person who picks up the leash able to act in the next 60 minutes.

GDPR and what we can / can't do with your data

We're a small EU-based company and the data lives on Supabase servers in Frankfurt. Some specifics:

You can export your full data at any time via the app's Account screen.
You can delete your account at any time. Deletion is immediate and irreversible. The tag returns to the unassigned pool.
We never sell or share your data with third parties for advertising.
If we ever shut down, our terms commit us to 6 months notice and a final data export window.
Even we don't see your messages in plain text unless we explicitly investigate an abuse report — they relay through our system but aren't stored beyond the audit log.

Other privacy choices worth knowing about

Don't post tag photos publicly — even with PawBack, the tag ID itself is the equivalent of an account ID. Showing it off in social photos is similar to showing your Bluetooth name.
Update notes when relevant — if your dog has been off a particular medication for months, remove it from the public profile.
Mark the tag as lost only when actually lost — the red banner on the public page is a signal to finders. If you keep it on permanently, finders learn to ignore it.