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Radio-frequency identification (RFID) is the use of a wireless data transmissions attached to an object, such as your credit card or passport. This information can be lifted, skimmed or scanned by anyone with simple technology.
Near Field Communication (NFC) is just like RFID except it can communicate both ways making data transferable to and from a chip. This is what Google Wallet and Apple Pay utilize for transmission of your credit card information at a point of purchase.