Chances are low to identify someone (for the time being, but increased video quality and facial recog. vs. a simple driver's license/ID database may change that

Chances are low to identify someone (for the time being, but increased video quality and facial recog. vs. a simple driver's license/ID database may change that soon). Obviously like you said, nothing you can do with a face mask. But at least if you know something is happening in real-time, motion triggers being the most important, there is at least some chance to intervene or call the police depending on the circumstances. Even if you can't stop them, speed is key, and if they are on foot they could be caught in the area afterwards with vague id such as clothing only. Capturing a license plate is probably optimal though, if they aren't on foot. Cameras are very good these days - HD and higher 30/60fps video - not the pixelated/blocky/useless recordings of 10 years ago. Also good to know ahead of time if there is anyone snooping around looking for easy targets (as small-time burglars do). Some systems do also have monitoring services. Otherwise yeah, cameras are at best a deterrent and source of evidence, nothing more as a passive device. Best security system I've ever had was a German Shepherd. Fully autonomous deterrent + active response if necessary :)