and if you lose your keychain...?

thinkgeek.com has a couple of biometric security devices, but unless you could slot a fingerprint scanner on the back of a keychain type thing(not taking into consideration the fragility of these scanner-pads) then i don't think i trust myself with all my personal info on my person.

you could get mugged, then the next day have all the contents of your private writings, images, etc etc splashed across god-knows-where.

i guess it's all about a balance between convienence and security and then deciding what is comfortable for the individual.