[kelnos]

Yes, absolutely. Adding an ID check to a ticket check and often a bag check and sometimes metal-detector wand check seems pretty minimal to me. Or have people scan their IDs themselves when they scan their tickets; pretty much every driver's license and state ID in the US has a barcode thing on the back. Of course have enough staff at the gates to deal with the exceptions or when things don't work right.

Regardless, this already happens: I went to a concert at Chase Center last year, and they were checking everyone's IDs, not even just a random sampling of them. When I went to EDC in Vegas last year, they were checking IDs at the shuttle stops on the strip. I believe they were only doing that for age verification, but if the ID is already out, that can easily turn into identity verification.