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NFC Tag

A small wireless chip that transmits data when a compatible device is held close to it. Used to trigger App Clips on iPhone by encoding an invocation URL in the tag.

app clips qr code invocation url

NFC (Near Field Communication) tags are passive chips that store a small amount of data, typically a URL, and transmit it when an NFC-capable device touches or comes within a few centimeters of the tag.

NFC Tags and App Clips

On iOS, NFC tags programmed with an App Clip invocation URL trigger the App Clip experience when a user taps their iPhone against the tag. This is the fastest invocation method because it requires no camera, no QR scanning, and no app. The user simply taps and the App Clip Card appears.

NFC-triggered App Clips are supported on iPhone XS and later.

How to Program NFC Tags

Write an NDEF (NFC Data Exchange Format) URI record to the tag containing your invocation URL:

https://yourdomain.com/menu/restaurant-name?source=nfc&location=table-5

NFC writing apps are available for both iPhone and Android. Tags are inexpensive (typically $0.20-$1.00 each) and can be reprogrammed multiple times.

Use Cases

  • Restaurant ordering - tags on tables launch a menu App Clip
  • Parking payment - tags on meters launch a payment App Clip
  • Event check-in - tags on badges or entrance signs
  • Product information - tags on retail displays or packaging
  • Bike/scooter rental - tags on vehicles launch a rental App Clip

NFC vs QR Codes

NFC tags require closer proximity (a few centimeters) but provide a faster, more seamless experience. QR codes work from a distance but require the user to open their camera. Many deployments use both: an NFC tag for convenience plus a QR code as a fallback for older devices or situations where the tag is not easily accessible.