CCC Says: "Some GameStop stores in Philadelphia have recently begun a new practice of fingerprinting users who trade in games. Why? Well they are hoping to catch thieves, pure and simple.
The idea is this: a lot of people who manage to rip off other game stores, or deliveries, or somehow otherwise get access to ill gotten video game gains use GameStop as something as a pawn shop. They will sell their games to the store as used games, even though they barely make any money doing so. This puts cash in their pocket and puts the weight of the stolen goods on GameStop’s shoulders."