Apple's $29 AirTag Is a Coin-Sized Tracker That Helps You Find Lost Things — Here's How It Works

The $29 AirTag ($99 for a pack of four) is a tiny metal tracker that you can attach to a keychain, drop in a bag or snap onto your luggage to keep track of those items. If you lose something with an AirTag attached to it, you'll get a notification with the location when someone with an iPhone or Mac comes within Bluetooth range of it.