The amount of people that let the TSA take a scan of their face when going through airport security - even when the signage clearly says you can opt out - proves that this effort, while noble, will fail.
I (and the family members I am with) always opt-out, but every time I look around, I am the only one doing it. If I had to guess, I'd put a compliance figure somewhere around 98%+.
Here is a good article on it: https://medium.com/womenintechnology/you-can-and-should-opt-...
