I keep reading the term biometrics, especially in relation to fingerprint authentication technology, and must confess I don't know exactly what it is. I hopped on over to Wikipedia and read that biometrics refers to "the science and technology of authentication (i.e. establishing the identity of an individual) by measuring the person's physiological or behavioral features."
So, how does that relate to home security? Well, biometrics is increasingly becoming available not just for big corporations protecting sensitive material but for residential door locks, including for safes and vaults. The article goes on to mention that "biometrics usually refers to technologies for measuring and analyzing human physiological characteristics such as fingerprints, eye retinas and irises, voice patterns, facial patterns, and hand measurements, especially for authentication purposes."
Hm, are you looking forward to the day when you come home, give your doorlock that knowing look, and it clicks open based on what it sees in your eye? If nothing else, it'll be nice not to have to worry about lost keys anymore.
Biometrics at Wikipedia