Automation and scale? You can't imagine how technology that allows a small number of people to automatically surveil billions of people can enable horrors that would be more difficult if you needed to use a labor force of hundreds of thousands of humans?

What that has to do with TSA Checkpoint at the airport? How many people go to through that checkpoint isn't dictated by how automated it is - it's dictated by how many people are flying.

All this thing does it speeds up process of you getting through TSA.

I don't disagree, but installing face scanners at the same location humans do face scanning and using them the same as they used the humans is not the same as mass surveillance.