Two ways in. Tap is the quick one.
Every visitor already carries the only tool they need — their phone. Tapping is the fastest way in, and it's what nearly every modern phone does best. Scanning the printed code works on anything with a camera, so no one is ever left out.
It's just a doorway to a web page.
Whether you tap or scan, the ring and the code do exactly one thing: hand your phone a web address — the very page you'd otherwise type in. That's why there's nothing to install and nothing to learn. Put a short story, a photograph, or a full film behind that address, and the gesture brings it to life.
Tap (often called NFC) is built into essentially every smartphone sold in the last several years. On the rare phone without it, the printed code is always there as a fallback — either way, a visitor is one second from the story.