This example was demonstrated in my ZIO World Conference Talk.

Steps to test this application locally

1. Run docker-compose up
2. Run the server sbt run
3. Open index.html file in your browser.
4. Fill the form with a valid name (contains only letters with more than 2 characters) and a valid email.
5. When the QRCode is displayed it will be automatically stored as images/participantId.png.
6. Check-in using the QRCode in images folder.