AirTags are quarter-sized Bluetooth trackers designed to help you keep tabs on valuables or frequently lost items like your car keys, wallet, or luggage. They can be used for tracking essentially anything you can attach them to, and Apple makes AirTag holders that can be clipped onto keys or even luggage. AirTags are water-resistant and can be personalized with your initials or an emoji.

AirTags work by emitting a Bluetooth signal that anonymously connects to any nearby device active within Apple’s Find My network. The AirTag’s location is triangulated based on the strength of the Bluetooth signal sent to those third-party devices. If someone elses AirTag finds its way into your stuff, your iPhone will notice its traveling with you and send you an alert. Just like your other Apple devices, AirTag can be put into Lost Mode. Then, when it’s detected by a device in the network, you’ll automatically get a notification.

While AirTags can be useful for keeping track of your belongings, there have been reports of them being used for unwanted tracking. If you happen to find someone elses AirTag in your belongings, your iPhone will notice its traveling with you and send you an alert. If youre concerned about someone using an AirTag to track you without your consent, you can enable "Item Safety Alerts" on your iPhone to receive notifications when an unknown AirTag is found moving with you.