What Personal Info Can Somebody See If they find My AirTag?
The short answer is “basically none.” Firstly, AirTags won’t alert passers-by to their presence. Somebody has to physically find your AirTag to do anything with it.
The only exception to this is if your AirTag is actually travelling with another iPhone user. For example, if you left an item behind on a bus or train, or in someone’s car, they might get a notification that an unknown AirTag is travelling with them. This isn’t so much to help them find your lost item as to prevent AirTags from being used for stalking and other nefarious purposes.
Likewise, an AirTag that’s been apart from its paired device for more than three days will make a sound, but this only happens when it’s moved. Again, this is an anti-stalking feature, so a lost item sitting in place still won’t alert anybody to its presence.
If somebody does come across your AirTag, they will be able to scan it with an iPhone or other NFC-capable device to get a bit more information. However, unless you’ve specifically put your AirTag in “Lost Mode” using the Find My app, it won’t offer up any information other than its serial number.
This can be used by law enforcement to trace an AirTag back to its original owner via Apple, but it won’t identify you unless the police or another law enforcement agency get involved and make an official and proper request to Apple, which usually involves an actual warrant.
If you do enable “Lost Mode” then anybody scanning your AirTag via NFC will get whatever additional information you’ve specifically entered, such as contact phone number or email address. This is entirely up to you, however, and what appears will only be the information that you specifically typed in when you enabled Lost Mode, so that can really say whatever you want it to.
Note also that the serial number isn’t printed anywhere on the outside of the AirTag — it can only be found by opening the case and removing the battery.