Unconfirmed but Antifa have been using OpenALPR (Automatic License Plate Recognition)
Even if it's not true, I'm not sure why they would not be doing it, a Pokemon for each license plate you find-
https://thedonald.win/p/GbkDxFlX/antifa-were-using-openalpr-...
Considering that license plates exist specifically for the purpose of recognition (originally by human observers), I don't think it's news in 2020 for anyone to be identifying them via machine vision. If you have a Raspberry Pi and a Pi Camera, you too can participate in this kind of surveillance.
"Antifa" seems to be a symptom of fascism and racism -- like an elevated white blood cell count in response to an infection. I'm not sure the organization even exists. It certainly wasn't a major part of the national dialogue prior to that fatal rally in Charlottesville.
Antifa did exist in the 1930s as the militant wing of the German Communist Party [1] and whilst working in London in 2012 I saw many organised protests of theirs for different causes than in the prognosis.
If the organisation existed today given the majority have been mobilised through steadfast polarisations, a multitude of grievances and not as cover for potential infiltrators, why would they admit it? It is much more convenient to remain nebulous.
The link adds credence that this is more an insurrection rather than "proud mothers" who it seems were organised to act as shieldbearers to protect the bombers of Americas federal buildings [2] and not their children to whom they hold a duty. You can see this mass organisation by self-identified antifa-associated accounts #PortlandMoms and scroll down.
The parent site itself, is that one of the splinters of the forum that reddit banned?
[1] https://www.dw.com/en/trumps-antifa-accusations-spark-debate...
[2] https://twitter.com/Brittany3l/status/1288012821666693122?s=...
And I know about OpenALPR.
And I know facial and license recognition has been around since the 60s.
It's implicit we are talking about the data collection and large scale database and organisational control of that data.
I don't know why that link scares you, but you should learn Tor or AdBlock or Tails or VM's, I don't mind paranoia but lazy paranoia is, well, lazy.
If they are actually doing it, it's a big deal and will make the news. I found the original link, but not that trustworthy, but we will see in the next 24 hour news cycle - https://partisan.space/what-you-need-to-know-about-antifa-un...