Some months ago, there was a nice documentary about police surveillance in Spain, and how European privacy laws differ from, for example, Chinese ones.
In China, all CCTV systems recognize all they can from everyone all the time, and if you jaywalk, they show your photo, full name, DOB, full names of family and friends, etc. on a huge display next to the crosswalk in order to shame you.
In Spain (and EU), the CCTV systems are prohibited from doing facial recognition or linking a person to personal information.... so they only recognize things like "blonde in red shirt and white pants, around 165cm, with a certain gait pattern" went through this one crosswalk at this time... and then trace that [anonymous] person hours into the past and into the future based on all the recordings they keep.
"Technically", in EU the person stays anonymous. Practically, they record enough data points to perfectly identify anyone they wish... but the system doesn't do it automatically, so it's all OK... 🤷