Australian smartphone case firm Dog & Bone has released a keyless Bluetooth padlock that can use biometric controls via the iPhone's fingerprint sensor.Featuring a Bluetooth 4 LE chip and two-year, USB-rechargeable battery inside a weatherproof frame, the padlock interacts with the fingerprint sensor through an app.Users can also create a log that the administrator can examine to see who opened it and closed it and when.In November, a Canadian startup developed similar quick release biometric bike lock that opens using the owner's thumbprint.