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It can. U2 did something similar in Vancouver - you needed to show the credit card the ticket was bought with in order to get in. It created huge lineups (a couple hours long) and a lot of fans missed the opening band (Mumford & Sons) [1]. Eventually they just started letting everyone in without checking credit cards, so they could get in before U2 came on.

Maybe it works for the 20,000-seat arenas NIN plays in, but it sure didn't work for a 54,000-seat stadium.

[1] http://vancouversun.com/entertainment/music/big-crowd-for-u2...

That's just the venue being cheap. For safety reasons the 54,000 seat stadium would be definition have twice as many entry/exit areas as the 22,000.

They were just too cheap to use the full capacity.

I had the same problem at the U2 concert in Santa Clara. 1/2 the doors were closed.

It was no worse than any other concert I ever went to.

No, it was on par with regular security checks.