My idea is that locks and biometric authentication in home security should not rely on one or two means for authentication, but allow for several means. If the home security system detects any deviation, it can ask the person to provide additional proof of identity/biometrics before the system sounds an alarm.Â
Reason: Each individual method has its shortcomings. Standard physical keys can be lost, misplaced or even copied. Standard locks can be "picked" by experienced thieves. Fingerprint readers can accumulate grease and dirt and become unresponsive. Palm vein readers are nice in that they are touchless, but what if you are wearing gloves in the freezing cold, or have some dirt, or injury, or bandage on the hand? Voice recognition is very convenient for the user (and I strongly recommend including it in multi-modal authentication), but what if you have a sore throat or a runny nose?Â Smartphone digital keys or digital key fobs are cool, but they can be hacked or fooled by a high intensity energy burst. Keypads seem convenient, but anyone with a telephoto lens can watch you using the pad, or moving your wrist and then just look at the finger grease on the keys.
My idea is that, at the very least, even after a person has entered the home using either a key or a smart reader to enter the home, the home security system Â will still ask one or more challenge questions to make sure the person is indeed legitimate. For example, the security system could ask "Welcome home? Was the temperature outside uncomfortable today?"Â The correct answer would be "I have no complaints" or some phrase like that.