@leodiensis let me explain.
The QR code is on the ticket once the order is ‘Completed’.
OpenTickets uses QR codes which allow you to check-in tickets using a QR reader on a smartphone, either iOS or Android. You will need Internet connectivity to use smartphone check-in.
The process is actually pretty simple.
Get a QR Reader App on your smartphone – NeoReader for iOS and QR Droid for Android work
Login to your website on the Browser you chose in the App. For example, if you chose Chrome then login to your website admin using Chrome. The user logging in needs to be ‘Check-in’ or above permissions. (Ex. Box Office, Box Office Manager or Admin also work)
Now your phone is a scanner using the app
When you scan a ticket, you will get one of 3 results – Checked In Successful, Already Checked In or Invalid Ticket.
This should allow you to check in.