It reminded me of the Mexican customs procedure. You press a button and if you got green, you proceeded to the exit. If you got red, you were asked questions by their customs agents.

I don't mind a randomizer per se. I would be happy if I got the correct arrow. However, I can see people that paid $85 to use pre-check would be ticked off that regular passengers potentially got to leave their shoes on at the screening point without paying any fee.

It will be interesting if it improves the checkpoints. I am surprised that Blogger Bob hasn't mentioned this new "improvement".