The principle
NFC is a very short-range contactless technology, the same family as contactless payment. A chip built into the card holds a link to your digital card
When you hold the card against the back of a compatible phone, it reads the link and opens your card in its browser. No scan, no app to install
Which phones it works with
It works with recent iPhones and with Android phones equipped with NFC. If NFC is disabled or missing, the QR Code printed on the card opens the same page
What happens when your information changes
The chip does not hold your contact details, only a link. You edit your digital card from your workspace, and the same physical card always opens the up-to-date version
Tips for use
Hold the card near the top of the phone and wait a second. Remove a thick or metallic case if reading fails. Always keep the QR Code as a fallback