I'm wondering if the system can track people with face masks (like one in the article picture)? And if they can track people who were recognized and later put on the mask and vice versa. That would be really scary.
They might not be able to recognise, but they can definitely track you.
Assuming the network has no blind spots people could hide into change their appearance.
Since it came up here the other week China is able to track people based on the way they walk, my guess is a mask may help but unless you can change your mannerisms while you have the mask on it won't help long.