Re: If the Police were 'transparent' about the full capabilities of facial recognition...
Voters would never agree to its implementation in the first place, assuming they bothered to understand the full technical capabilities of facial recognition technology.
It is a genuine threat to the democratic process, because you know where people are and you know where people will be to a high degree of accuracy at a certain time. Just knowing that, you can do a lot of damage, i.e. it's a threat to life. ANPR already does this to a fairly high degree of accuracy.
Currently, it's already done on a smaller scale. Cameras can track you immediately you enter airport security and keep track of you, all the way to the gate, there is nothing to say, with time, (other than cost) that can't be expanded fully.
Just play around with Google Lens, it's incredible how well it will recognise any picture of Priti Patel, from any angle, even blurry. From analysis of the Google Lens App, Google seems to be hashing all photos uploaded to news websites in real time, and indexing them through the text around them.