Some people will tell your that passive protection like RFID blocking or shielding is enough to protect you, then on the other hand their are skilled hackers who tell us that if they dial up a more powerful RFID readers output it can penetrate passive shielding measures like RFID blocking by RFID blocking sleeves and RFID blocking wallets.^
Ultimately the decision will be yours as too the level of protection you are comfortable with. We asked that same question and that is why we developed Armourcard with its Active jamming technology.