If your card has PayPass™, PayWave™ or Blink™, indicated by a logo or a radio wave signal on the front or back of the card, then it definitely has an RFID chip embedded in it. The absence of any logo or symbol, however, does not mean that your card does not have an RFID chip. As these cards are becoming widespread you should protect your cards to ensure that you do not fall victim to identity theft.
RFID (Radio Frequency Identification) is the technology that lets you simply wave your credit, debit, travel or identity card in front of a nearby scanner instead of having to slide the magnetic stripe through it. It’s a fairly simple concept. The electronic scanner sends a signal which is received by an antenna embedded into the card, which is connected to the card’s RFID chip, thus activating it. Unfortunately, criminals with minimal technical skills can construct their own clandestine RFID readers with a few simple supplies. These devices can steal your private financial information quickly and silently - all the criminal needs to do is come near your wallet with the hidden card reader. And the worst part is the cards don't have an off switch.