I don't understand how people manage to get through the turnstiles with these tickets as you need to pop your finger on the scanner to authorise your ticket access. Once the ticket has been used for the first time it is "locked" to the person who used it the first time. Unless they go for the kids' ones - kids don't need to scan prints. I just feel for the people who get duped into buying these useless tickets. They wouldn't do it if they knew there would be a problem. Imagine buying "cheap" passes for a family, getting there and having to buy them in the US again. We still come up tops with the UK ticket deals.