NFC compatibility

Which phones can read NFC?

Most iPhones from the iPhone XS onward read NFC tags in the background — no app needed; the phone shows a notification to open the card. Most Android phones with NFC can read tags when the screen is on and unlocked, provided NFC is switched on in settings.

Some phones don't have NFC, and some cases (especially with metal plates or wallets with cards inside) block it. That's why every card also has a QR code and a link.

How to tap

Hold the device against the top back of an iPhone, or the middle back of most Android phones, for a second. Tags have a short range — a few centimetres.

Activating a device

Each device has a permanent code and a claim secret printed on its packaging. Go to NFC devices → Activate, enter the code and secret, and choose what it should open: a card, a business page, a person's card or an event card. You can reassign it at any time.

Lost or replaced devices

Mark a device as lost and it stops opening anything. If someone leaves your team, reassign their device to the next person — the printed card doesn't need to change.

Using NFC tags you already own

Any writable NFC tag (NTAG213/215/216 are common) can be programmed with your card's link using a free NFC writer app. Devices activated through Furnace add reassignment and per-device analytics.