Back to the method

AppendixPrint a tray

Each stone is a URL. Scan it with the iPhone camera, or write it to any NFC tag.

1. Write the tag. Any NFC writer app can do it: add a URL record with the address on the card. Stick the tag under a stone.
2. Tap it. With an unlocked iPhone, iOS shows a notification. Tap the notification and Safari opens the instrument with that stone on the tray. Tap it again within a few minutes to take it off.
3. Make your own. ?thing=the%20book on the address adds an object. Two things, with no stroke, ask the agent to work out the verb.

Not tested on a physical tag yet. The QR codes were checked by a decoder, not by a phone.