Every time I'm queuing somewhere that requires scanning QR codes or digital barcodes, I see some people going through the back-and-forth of scans not working an

Every time I'm queuing somewhere that requires scanning QR codes or digital barcodes, I see some people going through the back-and-forth of scans not working and the person fiddling with their brightness settings or fighting auto-brightness. I'd say there's a legitimate use case for this right there.