RFID stands for radio-frequency identification. A RFID tag is a microchip that stores information that can be read from a distance by a special device called a reader or interrogator. RFID tags are now found in some passports, driver’s licenses, employee and university identification cards and credit cards.
While the use of RFID is hard to avoid in the modern world, there are some valid concerns about the safety of your information being kept on a RFID. The RFID tags in some of these cards can be read from up to 10m away. This potentially puts RFID carriers at the risk of identity theft.
Being on the safe side when it comes to protecting your personal information can never hurt. It is a particularly good idea to take steps in protecting yourself if you are travelling overseas, as this is when you are most commonly at risk of RFID scanners.
Fortunately, metal effectively blocks radio waves. This makes it very easy to retrofit your wallet to protect your cards from RFID scanning.
All you need to do is trace your credit card onto cardboard. Then cut out your ‘dummy card’ and wrap it in aluminium foil. Do this twice so you have two dummy cards. Place the dummy cards in your wallet so that they are directly on either side of your RFID cards. Depending on the size of your wallet you may want to add more dummy cards.
The point is that the foil effectively blocks any waves from coming near the RFID tag and stealing personal information. Alternatively, you can buy wallets that are specifically made to block RFID wallets. These range in price but don’t need to be expensive to work effectively.