Biometric Fingerprint Door Lock

Description

The fingerprint sensor is a semiconductor type rather than the cheaper optical kind, which means it reads the ridge pattern below the surface of the skin and keeps working with slightly damp or worn fingertips — the usual complaint with biometric locks in Indian weather. Recognition takes well under a second. The companion app pairs over Bluetooth to issue and revoke access remotely, and keeps a log of who opened the door and when. Auto-lock re-engages the bolt a set number of seconds after the door closes.