Yale YDM 4109A Digital Door Lock Fingerprint, Keypad-Black. Never carry keys again with the Yale fingerprint smart main door lock – an intelligent Bio-metric lock with advanced one-touch fingerprint verification technology. YDM 4109A has various access solutions: fingerprints, pin codes, App Access, remote control, and mechanical keys override. Yale YDM 4109A gives user all the access capabilities and works with Yale Bridge, which enables user to open lock remotely from any location