do not use your body parts as a key, you may lose them...
maple classic™ 
body horror?
@Efi now i imagine someone carrying a severed thumb in their keyring
not necessarily theirs
body horror?
@Efi wait is ear as a password a real thing
body horror?
@squirrel yes, not as common as fingers or eyes, but it has been used, lips too
technically you could kiss the finger reader on the phone and should work =P
body horror?
@squirrel or an eye
or an ear