Imagine a disposable photo-ID ticket marked "admit one authenticated client". The bouncer takes it, looks at it, looks at you, tears it in half, and lets you in

Imagine a disposable photo-ID ticket marked "admit one authenticated client". The bouncer takes it, looks at it, looks at you, tears it in half, and lets you in. You get to make a request, and as you carry the response out of the exit door, a member of staff takes your photo and prints a fresh ticket.