How an NFC tip card works
Each card contains a passive NFC tag — a chip and an antenna with no battery. When a phone's reader energises it, the tag returns a single URL: the recipient's tip page.
iPhones from the XR onward and effectively every Android handset in circulation read tags in the background. The guest sees a notification, taps it, and the page opens in the browser.
- No pairing, no Bluetooth, no app install
- Works with the phone locked on iOS
- The tag is read-only in normal use, so it can't be overwritten by accident