Good luck forcing a check like this at a busy event venue.
I once paid at Starbucks with the Apple Wallet barcode appearing in a photo of my phone displayed on the back of a DSLR. Plopped my not-remotely-iPhone-like Nikon D800 on the counter lens-down, LCD-up, barista scanned it without a second thought.
I once paid at Starbucks with the Apple Wallet barcode appearing in a photo of my phone displayed on the back of a DSLR. Plopped my not-remotely-iPhone-like Nikon D800 on the counter lens-down, LCD-up, barista scanned it without a second thought.