Straight answer
An NFC card holds a small chip. They hold their phone to the card. The phone reads a link and opens it — WhatsApp, Instagram, guest Wi-Fi or a Google review page. They do not download an app.
You decide what the tap opens. We encode that onto the chip and print a QR on the same card. They tap. The right thing opens. If they do not know how to tap, they scan the QR.
TAPSYNC does this for four rooms, not one handshake. Digital Cards open you. Social opens Instagram. Smart Wi-Fi puts guests on the network. Google Review opens your listing.
Their browser opens, or the app they already have. No account on their side. iPhone taps Digital Cards, Social and Review. Smart Wi-Fi on iPhone is a QR — iPhone cannot join Wi-Fi by tap.
The phone powers the chip for a moment. Nothing to charge. Hold it a few centimetres from the phone — top of an iPhone, centre back on most Android. If NFC is off, or the phone has no NFC, they scan the QR. Same destination.
The chip stores TAPSYNC, not Instagram. New number, new handle — log in at tapsync.in. About a minute. You do not reprint the card. That is the whole point against paper.
A question we missed — hello@tapsync.in.
