QR Code vs NFC: When to Use Each for Contactless Interactions

1. How They Differ

A QR code is a printed optical symbol scanned by a camera. NFC (Near Field Communication) is a short-range radio protocol requiring a chip embedded in the object and a phone held within a few centimetres.

2. Cost

Printing a QR code costs almost nothing. An NFC chip adds roughly 5 to 50 US cents per unit plus integration into packaging or the product.

3. Speed and Friction

NFC tap is faster than pointing a camera and waiting to focus. QR code scanning works at a short range from across the room and needs no radio hardware.

4. Device Support

QR codes work on any phone with a camera and a reader app. NFC requires an NFC-enabled phone, which is the majority of modern devices but not all.

5. Security and Tamper-Evidence

Both can be physically replaced or cloned. NFC chips can implement challenge-response cryptography; QR codes cannot authenticate themselves.

6. When to Use Which

Use QR for posters, menus, and large-format print. Use NFC when fast tap interaction matters, such as product authentication or transit cards.