Radio Frequency Identification (RFID) chips easily store and transmit data for credit cards, debits cards, and passports that they are embedded in. With RFID technology, all you have to do is wave your card in front of an RFID scanner to complete a transaction. Unfortunately, someone can build a counterfeit reader and pick up your RFID information without your knowledge. Scanners are now as small as smartphones or even a 9v battery and are normally placed areas where millions of people pass through. This allows thieves to easily capture your info as you walk by.
RFID blocking wallets, do just as they say - they block these counterfeit from capturing your information!