With contactless payments on the rise, so is a new kind of fraud: sophisticated thieves who can steal your credit card data by walking past you with electronic scanners.
The new threat exists because of the radio-frequency identification chips (RFID) that are starting to be embedded in credit and debit cards. A modern thief can use this "swipe to pay" technology to capture your info by scanning your wallet or purse with an electronic scanner.
Aluminium is used to block the signal between a scanner and your cards, preventing your details from being extracted.
An RFID shield is now included for free when you purchase any wallet. The RFID shield is the same size as a credit card and made from aluminium. You slot the shield on the outside of your contactless bank card for added protection.
If you touch your Oyster card on a yellow card reader when it's in the same wallet or purse as another contactless card, the reader may detect more than one card. When this happens, the card reader doesn't know which one to read. This means:
Only touch one card on the reader when touching in and out to avoid paying with a card you did not intend to pay with.
For this to work, simply store your oyster / keyless entry card on one side of the divider and your contactless bank cards on the other.