Guide

NFC cards & QR codes, explained

An NFC card is a small chip with a tiny antenna and no battery. When a phone comes within a few centimetres, the phone powers the chip and reads the link stored inside, then opens it. That is the whole trick.

How it works

Chip stores a link
Only a short URL (about 30–60 bytes) is written to the chip.
Phone reads it
Hold the card near the top back of the phone. No app needed.
Your page opens
The link loads your live profile, so edits show up instantly.

Android phones read NFC whenever the screen is on. iPhone 7 and newer can read NFC tags too; recent iPhones read them from the lock screen with no setup.

Write your link to a card in 2 minutes

1
Buy blank NFC cards or stickers
Look for NTAG213, NTAG215 or NTAG216 chips: about ₹30–150 each, cheaper in bulk. PVC cards look like credit cards; stickers can go on phone cases, desks and packaging. Metal surfaces block NFC, so use special anti-metal tags there.
2
Copy your NFC link
In the editor open Share → NFC card and copy the link. It uses your permanent ID (like /c/K7M2Q9), so renaming your profile link later never breaks the card, and it ends in ?s=nfc so analytics can tell taps from other visits.
3
Install a free NFC writer app
Use NFC Tools (Android and iPhone). Open it and go to Write → Add a record → URL / URI.
4
Paste the link and write
Paste your link, tap Write, then hold the blank card against the back of your phone until the app confirms.
5
Test, then optionally lock it
Tap the card with another phone to confirm the page opens. Once you are happy, you can lock the tag so nobody can overwrite it.

Locking is permanent. A locked tag can never be rewritten, so only lock it after you are sure the link is right. Because the card stores your permanent ID, renaming your profile link later is safe.

QR codes

Every profile has a QR code you can style and download from Share → QR code. Use it on posters, table tents, packaging, brochures and the back of your NFC card as a fallback for phones with NFC switched off.

Keep strong contrast between dots and background
Print at least 2.5 cm × 2.5 cm
Leave a blank border around it
Always test-scan the printed result before ordering a big batch

Ready to make yours?

Create your free profile