Biometrics are not practical, if somebody steals a keycard, you replace the keycard, if somebody steals your palm-print, you can't chop off your hand and grow a new one with a different palm print. Does capitalism have a anti-tool bias ? Fast-food does away with cutlery, smartphones do away with input devices like pens or keyboards, bio-metrics do away with keys. Is it really so bad if you need a helper tool for using an object ? I get doing away with hazardous cans that need a can-opener, but keys ?