I've used hand scanners before, capacitance only, for payroll and attendance purposes at work. I believe the combination of biometrics (fingerprint/handprint) and electrocapacitance would be a much more secure way to help with security. Capacitance does not work on a dead hand/finger/skin-sample. Implants can also be excised. Nor does it work with something electronically/mechanically simulated. ''Prints'' or visually metric sources are easy to copy - no matter what the source. Capacitance is not. I don't really like the intrusive means of having a beam of photons bombarded into my eyes whether on a visible spectrum or not. Sticking my eye up to something for measurement, although an effective means of visuometric verification, seems somewhat intrusive and potentially dangerous when considering the proximity to such a sensitive organ that is required to perform this test. If anything - a combination of hand capacitance and print with the addition of facial structure verification would suffice. Just as long as we could be assured that no one could enter and change the encrypted database for criminal purposes (from the back door). I've already made plans for accessory free (key/remote/card) entry into my house and car. As far as making my public routine completely traceable? I've got nothing to hide. I'm all for it. Its just a matter of time, anyway.
Which biometric device would you most like to see in common use?
Retinal scanner (why?)
Fingerprint reader (why?)
Hand reader (why?)
Voice recognition (why?)
Facial recognition (why?)
Other (what is it?)
None--this is way too sci-fi!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic