NFC – Definition and How It Works

NFC (Near Field Communication) is a short-range wireless standard – used in smartphone-based access, payment and identification.

How NFC works

NFC (Near Field Communication) is a short-range wireless standard up to approx. 10 cm, based on RFID at 13.56 MHz. Two NFC-capable devices exchange data when brought close – without active pairing.

NFC is a standard feature in smartphones, used for contactless payment, ticketing and access.

NFC in access systems

  • Door opening via smartphone instead of card
  • Digital employee badges (e.g. Apple Wallet)
  • Ticketing for events and leisure venues
  • Combined with RFID cards in the same reader

Frequently Asked Questions

Is NFC the same as RFID?

NFC is based on RFID (13.56 MHz) but is a bidirectional subset with defined data formats.

Can NFC be used with iPhone?

Yes. iOS supports NFC access via Wallet and – as of iOS 18 – third-party apps.

How secure is NFC?

Very secure due to short range and encrypted transmission. Attacks require physical proximity.

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