Don't get scammed a new form of pickpocket has appeared on the scene and you don't even need to be physically touched to lose your valuables. Crooks now can electronically scan your and atm cards, while they are still in your wallet or purse, without you ever knowing about it. At least, not until you get your next statement fight back by making it as hard as possible to steal what is rightfully yours. The RFID blocking cards are the size of a card that are designed to protect personal information stored on cards, debit cards, smartcards, rfid (radio frequency identification) driver's licenses and any other RFID cards.