Looking at the title, I hope one day we can run a campaign for a ban on ALL(*gasp) mass surveillance, not just biometric :/
We will just have to figure out other ways to stop the terrorists.. (or stop creating them in the first place)
Other ways? All this mass surveillance has hardly helped so far. All you get is nice footage after someone blew something up.
By the way these surveillance cameras and systems are stupidly expensive. For most installations they're so expensive you could pay for a police officer permanently stationed for years at each of those public spaces and subway stations you were going to surveil. That would actually help making them safer.
On top of that there's many other ways to use that money to save lives where it matters.
For instance you could use the money you were going to use on surveilling public places to make them physically safer instead: less accident-prone, install public access defibrillators, etc. Statistically you're going to save so many magnitudes more lives that way, it's not even funny.
People seem to assume that heart attacks is something that happens to other people, while terrorism of all things is a personal threat to them.
Not bombing their countries would probably go a long way toward this. The US spends far too much money dropping explosives on brown people.
This was never intended to stop terrorists:
However if you used a material that is only transparent at certain angles, you could make use of the fact that cameras are generally placed somewhere near the ceiling.
A baseball cap kind of solves the same problem though.
https://www.fastcompany.com/90274113/heres-a-look-at-delta-a...
Simple solution: just wear sunglasses on top.
Then simply refuse to remove either. It's about creating a shelling point: face scanner work on the pre-covid premise that most people were NOT covering their faces, so it required no action on their behalf.
Fortunately, the situation changed: the shelling point prefers the existing status-quo, so it will be seen as an unreasonable expectation to ask you to remove your mask, unless it's a TSA agent checking your id... and it's not.
Say out loud "But I don't want to catch Covid and die!"
Pretending you care more about public health works very well!
If they insist, say their disregard for the FDA guidelines just to play with they new tech toy is not acceptable, and say you will denounce this blatant endangering of everyone health.
The fear of monetary liabilities from Covid is a great way to make most business dance the way you want.
If you remove reliable identification as a feature you will push the equilibrium to some other state. Are you sure you want to live in that state?