How does NFC work?
In the case of deuter, thin self-adhesive chips are used. These are passive. This means that the chip does not store or send anything. The chips are linked with information (a URL). As soon as an end device such as a smartphone sends out an NFC signal and is close enough to the chip, it throws back the stored information as an "echo".
NFC is currently compatible with all Android smartphones (including tablets) with OS version 4.0 or higher. In the case of Apple, devices from the iPhone 7 onwards are compatible.
Some devices are already capable of reading NFC without an additional app, as long as this is activated. Older devices in particular usually still require an additional app.