There are no methods that will remain bulletproof, for determined adversaries / state actors. Biometric gait analysis can potentially defeat facial camouflage, and the technology will continue to improve, especially as it becomes more widespread in non-surveillance applications, e.g. athletics and fitness
See discussion in other comments here
We're getting pretty close to that in some countries. Even in the USA where camera density isn't particularly high - there are so many cities where you cannot get around without using a car. After California eliminated the Steve Jobs license plate law, there's no place where using a car isn't fairly well tracked. With ALPR, Uber/Taxi records...I don't personally see how you can get around a city like Houston or Phoenix without either:
1) Being tracked from your house 2) Breaking the law (covering license plate, stealing car, etc)
Unless I've grossly overestimated the prevalence of ALPR's. I'm assuming there's quite a lot of undocumented ones.
For a lot of people this wouldn't be super accurate since they will only see you to the front door but won't know what level you are on.
I remember reading in 2016 that this system or another like it was being used in another US city. There don’t appear to be any rules around disclosure, and the costs will only decrease. It could be used in dozens or hundreds of cities already.