The RFID chips used in all credit cards, thankfully, are passive RFID tags, so the chip has to be close enough — usually four to six inches — from the RFID reader to get activated and emit a signal. If your card isn't RFID-enabled and you'd prefer to have it, you can call your credit card issuer and ask for a newer card that comes with an RFID chip embedded. Credit card fraud by RFID theft may also be considered a waste of time by a thief, as it will likely be obvious if someone is hovering around other people in the hopes they're carrying an RFID-enabled credit card.