http://blogs.forbes.com/marcweberto...g-pass-more-information-for-identity-thieves/ If you fly Delta, protect your boarding pass because it contains valuable information for identity thieves and other criminals. Many travelers discard their boarding pass after flying. If it is subsequently recovered by thieves or potential terrorists it can provide several pieces of critical data that could cause you a lot of trouble as well as affecting airline security. After the recent episode with the Nigerian who managed to bypass security and fly across the U.S. with a day-old boarding pass, I got to thinking about boarding pass security and what the TSA can do about it if they would just use their imagination. So while at LaGuardia airport this morning I am examining my boarding pass and all the data it contains and realize that Delta is still printing the entire frequent flier number on the document. Northwest and other airlines stopped that practice years ago when they realized that it could potentially be used to compromise other information in their system. Evidently Delta is not worried about it because not only is the number printed but also the record locator number for the reservation and of course the name of the passenger.