Whether you want to protect confidential information or keep your friends from messing with your screensaver, Gatekeeper makes it easy to lock up and prevent unwanted tampering. Using state-of-the-art AES-256 encryption and a Bluetooth 4.0 connection, Gatekeeper provides a wireless security solution with no physical locks or barriers. Measuring just 2 inches long and weighing only 6 grams, it easily clips onto a keychain or slides in a pocket for on-the-go convenience. Should you lose the device, it also functions as a Bluetooth tracker, letting you know how far away you are via smartphone app—and it even chimes when you get close enough.