Well, in terms of buying tickets on ebay, just don't, it isn't worth the risk of ruining your trip to save a couple bucks. Now, on the subject of the biometric scan, my husband and I decided to do an experiment. He and I swapped APs and got in line. I entered my ticket, it failed, tried it again, it failed, CM bypassed the system, "Have a nice day!". Now, H enters his ticket, it failed, tried it again, it failed, CM bypassed the system, "Have a nice day!". Two failed APs in a row, and the CM never asked for ID. I'm sure there are the diligent ones out there, but our experience was interesting.