QR Code Scanner Icon not showing

[frankfurtgarba]

So I made this app where I can check in everyone with the help of the qr codes I sent out to my customers in my event. I added a QR Code scanning feature in the app but there is noicon to open the scanner.

 It should be visible beside the name option. The information in the qr code is the name of my customers.

[Steve]

Maybe enable scanning?