It's probably the same few scalpers every time. You don't want to punish the average guy that changed plans and needs to resell once or twice. If you had the d

It's probably the same few scalpers every time. You don't want to punish the average guy that changed plans and needs to resell once or twice. If you had the data, it would be easy to spot these trends and catch the bad guys. We need the staff at the concerts to check ID and log the name of the person and the name on the ticket. Mismatch: flag the buyer and see if they've done it before.