Stealth Technology For Credit Cards!
Protect Your Personal Credit Card Information.
Credit card sleeves use the scientific principle of a "Faraday Cage" to prevent RFID chips in your card from divulging your credit card information. Today, it is possible for theives with off-the shelf equipment to steal your credit card numbers even if the cards stay in your purse or wallet! A credit card sleeve functions as a secure shield, but only if it is made of the right material
Notes and Special Information
Special note: Not all credit cards have RFID chips, and a sneaky thief may put a device near a checkout lane where you would take the card out of the shield, so be on the lookout.