Ahhh... the ole "bar trick." With a good attitude, I've definitely done a 2for1 entry. A further biometric "hack" : Many facility doors use a "hand scanner" t

Ahhh... the ole "bar trick." With a good attitude, I've definitely done a 2for1 entry. A further biometric "hack" : Many facility doors use a "hand scanner" to secure certain doorways, which combined with your RFID tag "authenticate" the potential entrant. All that most of these "hand scanners" are doing is very hazily checking finger lengths and hand ratios (i.e. NOT FINGERPRINTS). So in certain limited access situations my twin and I were able to share certain similar privileges, including a "50% off safe deposit box."