If you are using QR codes for attendance tracking, the simplest setup is QR Code Ticket with Google Forms or Google Sheets.
Preferred path for check-in: use QR Code Ticket. If your workflow starts in Google Forms, open the Google Forms add-on docs; if you already have attendees in Google Sheets, open the Google Sheets add-on docs.
That is the fast path for event attendance and day-of check-in. Trak still fits broader process tracking, but for people check-in the Forms and Sheets add-ons are the primary route.
- Google Forms: best when registrations start from a form.
- Google Sheets: best when you already have a list of attendees.
- qr-code-ticket.com: the main product site.