We have used keys for a very long time and have come to trust keys as a secure way of gaining access to our property. However, it is important to remember that keys can get stolen and copied and locks can get physically forced open. No door lock is 100 percent safe.
So, the question should be whether keyless door entry systems, including fingerprint door locks, are safe compared to key-operated entry. Biometrics are seen as the way forward for many security applications. Humans have physical attributes, including fingerprints, that are unique to them and that are hard to copy but that does not mean that it is impossible. Also, any electronic door lock can potentially be hacked and an electronic pulse can be falsely generated that will open the door.