What are the unique facilities that you can enjoy if you use the biometric door locks instead of others? Fingerprint reader scanning system or the Biometric Door Lock has proved to be one of the most successfully tested biometric technologies. It is also to be noted that the biometric door lock is much more cost effective as well as accurate. Moreover, it offers a secured method of user identification with such a thing that can neither be stolen nor be lost or replicated. Duplication of such biometric devices is virtually impossible.