Find lost bags, keys, and more when you attach them to a SmartTrack Link Mobile Tracker from eufy Security. This small, palm-sized tracker uses Bluetooth to interact with the devices around them. If you're trying to locate an object with the SmartTrack Link attached to it, simply use the Apple Find My app on compatible devices to trigger the Link's built-in alarm, or to track it down through Apple's worldwide network of devices. You can even use the Link to find your phone with a quick double-tap. If someone finds your SmartTrack Link, then can reach out to you by scanning the QR code printed on the back.