Avoid the hassle of losing your key when you have the power to unlock Tapplock One+ with your fingertip. Built with a state-of-the-art capacitive fingerprint sensor, your finger is the key. Not only that, the Tapplock One+ can store more than 500 different fingerprints so you can easily allow family or friends to use the lock. A fully charged One+ can last one year and it’s water, weather and rust-proof design mean it can be used outdoor without any worry.