People always worry about malicious tracking and conveniently forget that you could buy GPS+cellular trackers years and years ago. They are 100% undetectable and very precise.
AirTags always need an iDevice to be close by to update their location.
AirTags always need an iDevice to be close by to update their location.
Nit: they’re very very detectable, just not using your off the shelf phone.
If it’s hidden in a metal frame then it’s not going to get a good GNSS fix. And if you’re doing a deep sleep you’re powering down your GNSS module so not getting a proper warm fix.