Forgetful... what was I saying again?

We have what should be a very simple computer log in system. The desk staff gives the patron a ticket with a PIN on it, and the patron enters the PIN on the only text box on the log on screen.

We give a patron a ticket and assign a computer. She puts the ticket in her purse and goes to the computers. A few minutes later she is back up asking where she gets the PIN from, apparently her purse was hungry. We give her a second ticket, she goes down. A few minutes later she is back up asking where the PIN is on the ticket. We show her the clearly labeled PIN. Almost to our surprise she didn't come up a 3rd time.
And this was not her first time using our computer system.