When I go through security I am on the clock and a customer is getting billed. I view TSA and their games as interfering with interstate commerce.

PLEASE do NOT give these idiots any ideas!

I don't know what a "one-time-use bar code" would be. A bar code is just a particular encoding of some data. In order to ensure that a particular bunch of data is only "used" once, they'd need to store the fact that it had been used somewhere, and look in that place every time someone tries to "use" a particular bar code.

If they want to be sure that the information in a bar code came from an airline and has not been modified since, they should have the airlines add a digital signature. Bob at the TSA blog mentioned something similar (maybe he spoke of encrypting the data, not signing?) some time ago, but when I asked some very basic questions about the possibility of key expiration and revocation, he never answered.

Right - which is why the poster and his equally snotty TSA friend deserved each other that day!

That works until one exits the club and sees a three-smurf gate grope crew hanging out smack in the middle of the terminal, jaw jacking, leaning on their gate grope trolley, and eating subs, just like I saw at ORD tonight. Professionals, every one...

I'm really surprised they haven't barged into an airside club somewhere and started checking IDs, groping, and/or swabbing people.

Shh!!!! Don't give the morons any ideas! That would be the day, mandatory nude-o-scope or groping to enter an airline club.. Lets hope the nude-o-scope, and the rest of this security theater disappears, just like the puffer machines!

I highly doubt those idiots would ever implement it. OLCI saves the airlines tons of money in operating costs. Considering how tough it is for the airlines to break even, let alone make a buck, I could see them going into open revolt if that were ever taken away.