I knew this comment would come. But you're wrong. A photo of your ID is accepted almost everywhere, and especially at a ticketed event where the only purpose is to match your face to the name on the ticket. They're not the police, they just want to check that you're the person who should have the ticket.

Well around here if they ask for an ID, passport or driving license they don't accept copies. You are wrong on the "almost everywhere". Might be true for most places around you.