So she had this user experience with a single stranger’s AirTag.
But if you’re on mass transit or an airplane, isnt your iPhone going to go crazy with everyone else’s AirTag triggering notifications? And won’t your AirTag(s) be triggering everyone else’s iPhones?
EDIT: Apparently the answer is that, you only get the annoying notification if the alien AirTag is travelling with you and someone else is actively tracking you via their own Find My application. So, this woman was quite right to be freaking out. She said she didnt see anyone. She said she was alone. She wasn’t alone.
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Per appleinsider.com/inside/airtags
Anti-Stalking Features
Apple has implemented a feature in iOS 14.5 to prevent bad actors from hiding trackers on a person. If the iPhone detects a device using the Find My network following the person around, perhaps in a backpack or vehicle, the iPhone will alert the user of the tracker.
This alert will only occur when the tracker has been separated from its owner’s device, so don’t worry about spurious notifications while riding a bus or walking in public. Apple cannot provide these notifications to Android users, but the company has another feature to help dissuade stalkers.
If an AirTag has been separated from its owner for three days, it will begin chirping regularly. Reports indicate the chirp is only about 60 decibels at its loudest and can be easily smothered if the AirTag isn’t in an open space. This chirp is the only protection against stalking Apple can provide to those who do not have an iPhone.