So, looking at the pictures posted (Hat tip to WDWMagic.com) - it appears that it's just random screening for now -
http://www.wdwmagic.com/attractions/...licy/26230.htm
Honestly, that doesn't make me fee ANY safer. Maybe it's just that way till they can roll it out further.
Also, looks like 3rd party security operating the devices which makes sense given the quick rollout - and finally, I can't tell whether they have eliminated the guest with no bags line. That needs to happen and all guests need to go thru metal detectors in my opinion. If you are going to do it, do it right.
We'll see how this plays out in the coming weeks and months.