A baseball cap with a few ...
IR LEDs fitted to the peak or a baseball cap are usually enough to render facial recognition useless - at night. (1 watt IR LEDs fitted around a number plate will 'blind' Plod's national number plate tracking facility - even during the daylight hours.)
For daytime use, heavy black eye glass frames do the trick for faces.
They are also using 'gait style' identification, where a computer identifies a person by their walking style. I guess this means we will have to learn John Clease' Ministry of Silly Walks - see: < https://en.wikipedia.org/wiki/The_Ministry_of_Silly_Walks#/media/File:Silly_Walk_Gait.jpg >.