do RFDI blocking cards work
The Scanner Guard Card is the size of a credit card that is designed to protect personal information stored on credit cards, debit cards, smartcards, RFID driver's licenses and any other RFID Cards from e-pickpocket thieves using handheld RFID scanners.ow to us the Scanner Guard Card. Simply add two Scanner Guard Cards into a wallet, credit card holder or clip as shown in the pictures below to block all unwanted RFID Scanners. You want to sandwich your credit cards, debit cards and other RFID cards in between two Scanner Guard Cards.