Radio Frequency Identification (RFID) Skimming is a form of digital theft. RFID-based credit or debit cards (cards that can be tapped) run the risk of being read and duplicated if they aren't blocked from certain devices which can read the information. An RFID Blocker is a thin material that can be added inside most of our wallets to ensure protection from RFID Skimming. If you do not have RFID-based smart cards, you don't need to worry about an RFID Blocker.