A biometric fingerprint door lock has been introduced, which literally makes your finger the only key. What’s more, another noteworthy feature is that it is an automatic door lock too.
The biometric fingerprint door lock uses 4 AA batteries and does not require a PC connection. Fingerprint verification as well as a door lock is combined in a single unit for easy installation. It is available for doors that open either from the left or the right side.

Having a finger print door lock is a good security measure but still there are some problems. In case if your thumb is damaged you won’t be able to open the door.