For all of the “mark of the beast” worry-warts...
If you’ve already succumbed to the lockstep conformity consensus model of “truth”, ringing up granola bars should be the least of your concerns.
If you have an iphone, it already has facial recognition. yes, I know a lot of people don’t have iPhones....but Apple is not the only one using the technology.
Then maybe you can explain how Scripture predicted this almost 2,000 years ago.