Originally Posted by
sefrischling
...but it can be a good thing if implemented correctly.
Ah, there's the rub. TSA has a history of stuffing up the introduction of new technology, from unreliable puffers to "kindergarden safe" mmw scanners to inspecting print-at-home BPs with blacklights.

Why would this be any different?
Originally Posted by
sefrischling
There is no real hassle with the scanning of an encrypted bar code. ...
Either it matches up or it doesn't. It should actually reduce hassles.
That assumes that the accuracy of the scanning is 100%. I wouldn't bet on it. Especially when the outcome of a false positive is being handed over to the police.
As
I said elsewhere, I think this is the "new toy" syndrome rather than any genuine attempt at (imaginary) security.
And checking IDs does not add to security, nor is it TSA's job to protect airline revenue or catch criminals.