The work of checking IDs is mostly done in US venues already, for 21+ drinking wristbands. It would have to be done differently, for sure, but a good portion of

The work of checking IDs is mostly done in US venues already, for 21+ drinking wristbands. It would have to be done differently, for sure, but a good portion of that labor is already being incurred. More likely, the venues don't have much economic incentive, if any, to reduce ticket reselling and scalping.