Testing Apple’s Airtag’s privacy features
While AirTags are explicitly intended for items only, Apple has added safeguards to cut down on unwanted tracking. For example, the company does not store location data, and it will send an alert to an iOS device user if an AirTag appears to be following them when its owner is not around.
If the AirTag doesn’t re-tether to the owner’s iOS device after three days, the tracker will start to make a noise. But the safeguards are a work in progress as the software rolls out and users begin interacting with the devices.