For any non-US-based reader planning a trip to CTIA this Spring (like me), make sure you’ve registered for authorisation before you travel.
You can do it online. And it’s not that painful. My authorisation was granted immediately. It looks to me to be an online carbon copy of those visa-waiver forms you have to complete in the air — or more annoyingly on the ground before you land.
The details you need are on CNN’s Business Traveller page here.
The US Government’s registration/authorisation site is here.