Thanks, and good to see you back.

Perhaps I wasn't as clear as I could have been. At your airport, DEN, if you are entering the North checkpoint and the arrow points to the "wrong" way, then just leave that checkpoint and go to the South checkpoint. If once again it points the "wrong" way, then go to the Concourse A checkpoint. That gives the passenger three opportunities to avoid the "wrong" line if the iPad is being used at all three checkpoints.

And if the iPad sends half to "wrong" line and half to the abbreviated screening line (just an assumption for this sentence), then that means the TSA only has a 1 in 8 chance of ensuring that the passenger will eventually be sent to the "wrong" line (and once again, the passenger could just simply leave the airport without any repercussions since the administrative search has not begun at that juncture).

So why don't we just treat everybody as PreCheck by default? No need to "game the system," no outlays on new equipment and training, a faster checkpoint experience for all...

Many here are saying exactly that. Pre Check type screening for all escalating with cause.

Of course most participants here can think.

Hang on, now.

Let's not go all radical and un-American and talk about 'no outlays on new equipment and training'.

That is simply NOT going to fly (pun intended).

Security is a for-(big, taxpayer-funded)-profit industry in this country, and don't you ever forget it.