His gigs are obvious fodder for ticket scalpers. So his management came up with a complex scheme where only two (expensive) tickets were sold per person, and that person's name appeared on the ticket, for an ID check at the door. It certainly worked for Tom Waits, but I have doubts about it working for Madonna.
PS: Having got into the gig, one was pleasantly surprised to see that there were few, if any, restrictions on photography.

