Why Not Just Use an AirTag? NFC vs Bluetooth Trackers for Bikes

Hiding an AirTag on your bike feels like the obvious modern answer to theft. It's a good tool — but it solves a different problem from a registered NFC tag, and the two work best together. Here's the honest comparison.
The core difference
A tracker shows you a location on a map. An NFC tag lets anyone confirm the bike is yours and reach you. One helps you chase; the other helps you prove and recover.
What a tracker does well
An AirTag or Bluetooth tracker gives you a rough live location via a finding network — genuinely useful for following a stolen bike. But it has a battery that dies, it can be found and binned by a savvy thief, and crucially it doesn't let a finder or a buyer confirm who the bike belongs to.
What an NFC tag does well
A registered NFC breadcrumb tag has no battery, is cheap, and survives for years. It doesn't track — it proves. A finder taps it and can reach you; a buyer taps it and sees the bike is registered; police checking a recovered bike find a link to an owner.
Location on your map · battery · findable · doesn't prove ownership
No battery · cheap · proves ownership · reunites via a finder
The answer: use both
A tracker to chase, a registration and NFC tag to prove and recover. The tracker might find where your bike went; the registration is what gets it legally back to you.