https://github.com/topics/gait-recognition
https://securitytoday.com/articles/2018/11/12/new-surveillan...
https://recfaces.com/articles/what-is-gait-recognition
If they (can) do so ATM (at large scale and in real time) is another matter, but only a question of time, IMO.
Then there is https://en.wikipedia.org/wiki/Wide-area_motion_imagery AKA https://en.wikipedia.org/wiki/Gorgon_Stare , https://en.wikipedia.org/wiki/ARGUS-IS , the digital signature of your gadgets in the EM-spectrum, where their sudden 'disapperance' might raise flags, leading to 'replay' of the region for further analysis.
But there is always hope in rising incompetence of ever growing institutions and organisations, hollowed out from the insides by the parasites they attract.
[0]https://www.cnet.com/science/china-surveillance-tech-ids-peo...