This has been going on continually since the process was created in the US. Everytime I fly back to the US from YYZ, no matter the airline or flight, they are there.

Having said that, I have found their security people very easy to defeat. I just position myself in line so they grab another passenger before me...the same process that has saved alot of us when the gate screens were done in the US airports. In a couple of instances, I also pretended like I didn't hear them say "excuse me, sir", and I just blew past them down the jetway...they never said anything and just grabbed the next person who walked by. The whole process is annoying, but fairly easy to avoid.