# Near-Field Communication Near-Field Communication (NFC) is a very short range (a few centimeters) wireless standard, technically a descendant of [[RFID]], used for tap-to-act interactions: contactless payments (Apple Pay, Google Pay, tap-to-pay cards), transit fares, key cards, and pairing or reading small tags. The tiny range is a feature — you have to deliberately bring two things almost together, which limits casual interception. ## Why it matters here NFC is mostly neutral, but it is worth distinguishing from its cousin [[RFID]] precisely because the two get conflated in conspiracy discourse. NFC powers mobile payments, which makes it adjacent to the financial-surveillance and cashless-society debates that show up in the vault's [[Cryptocurrency Lexicon]] (the [[CBDC]] panic, "they want to track every transaction"). The genuine privacy angle is modest — payment networks and platforms do see tap-to-pay transaction data — but it is a real tributary of the cashless-economy concern rather than a fabricated one. Where 5G and RFID attract fantastical claims, NFC's short range keeps it relatively grounded. ## See Also - [[RFID]] — the longer-range tag technology NFC descends from, and the bigger conspiracy magnet - [[Bluetooth]] — the other short-range standard - [[CBDC]] — the financial-surveillance debate tap-to-pay sits near