You don't have to get permission to travel.
Folks here have been complaining for the past year and a half about the security procedures and how they spend too much time on those who (they think) don't pose a threat. Well, here's a system that promises to use available public data to reduce the inconvenience experienced by those who do pose little threat while concentrating the screening resources on those who pose a greater risk. Seems like this is exactly what people here have been asking for since the air transportion system started up again on 9/13/01.