Biometric locks are rage these days because of their intelligent technology and multiple modes of opening. It is a three in one solution. You can open the door by fingerprint, password and physical keys just in case. The biometric locks are very simple locks. Three-door-lock-opening-mode is a wonderful feature. In case you forget your pass code, you can open by the spare keys. No big deal. You don't have to stay out because you lost your keys or battery of your door lock died.