NFC (Near Field Communication) is a contactless wireless standard that enables two devices to swap information when placed a few centimetres apart. Unlike Bluetooth, which requires pairing and works at greater distances, NFC works instantly without setup and only functions at very close range.
On smartphones, NFC chips let you:
- Make contactless payments by tapping your phone on a payment terminal
- Read NFC tags embedded in posters, packaging or business cards to trigger actions (opening a website, saving contact details, connecting to WiFi)
- Share files or data between two NFC-enabled phones by holding them together
- Use your phone as a transit pass for buses and trains
- Unlock doors or hotel rooms in compatible buildings
NFC operates at 13.56 MHz and uses electromagnetic induction to transmit data at speeds up to 424 kbit/s. One device (the initiator) generates a magnetic field that powers and communicates with the other device (the target), which is why NFC works even with passive tags that have no battery.
Most modern Android phones include NFC as standard, though not all iPhone models do. You'll find NFC support in most flagship and mid-range devices from the past five years. For payments, you typically need your bank or payment provider to support NFC on their app.
Common gotchas: NFC only works when the screen is on (in most cases), has extremely limited range, and requires the correct app or system support to read tags. Not all retailers or organisations have deployed NFC infrastructure, so availability varies by location and use case.