How it works:

For iPhone (iOS 15 and above):
  1. Take a screenshot with your phone.
  2. Open the Photos app.
  3. Find and tap on the screenshot with the QR code.
  4. Tap the "Live Text" icon (looks like three lines in a box) if it appears.
  5. If the QR code is detected, a link or notification will appear—tap it to open.
  6. If it doesn't appear:
  7. Tap and hold on the QR code.
  8. Choose "Open in Safari" or another relevant option if detected. 
For Android:
  1. Take a screenshot with your phone.
  2. Open the Google Photos app.
  3. Tap on the screenshot with the QR code.
  4. Tap the "Lens" icon (usually at the bottom of the screen).
  5. Lens will scan the image and detect the QR code.
  6. Tap the link or result that appears.