There are some elements of this that will most likely make it into the checkpoints at *some* point in the future. There will still be spots where human interaction will be required, but the self screening thought process has been around for a long time. I have seen the one suggested model where there is the integrated tunnel/hallway system that passengers simply walk down the hall with their bags and everything is screened without direct involvement or interaction - simply walk single file and a certain distance apart. If there is an alarm, the individual is met at the end of the hall, and undergoes additional screening as needed. I will freely admit, that is a fairly Pollyanna way of hoping, but I would love to see the tech reach a point where that is the norm. The biometric systems are currently in development for GE and Pre, and Airline crews - although the way it comes down, YMMV after the development phase. There are tons of technologies out there that would be a leap forward in efficiency and customer experience, one problem is that many of them do not scale to use in the checkpoint environment (dust, varying temps, etc).