But that would be just a single image with no context, and usually no location and no ability to link it to bluetooth or phone number, as most online services r

But that would be just a single image with no context, and usually no location and no ability to link it to bluetooth or phone number, as most online services remove exif data now, I belive. It's not like a fixed CCTV camera that is continuously recording and being constantly analyzed and stored forever, and can detect regular patterns of behavior, and thereby able to automatically tag things that are "out of the ordinary". >If it's CCTV, it's just one company that manages the photos, under local regulations. How could you possibly know that? There is nothing to say that the information is not being shared. TBH, it's extremely naive to think that information stays inside the building, or that the three-letter agencies haven't already connected those thousands of cameras. It's interesting that you use the word "photos" too, what I'm worried about is much more than photos, it's a permanent historical record of dates/times/movement patterns that can be linked over thousands of cameras, creating a continuous historical record of everyone's movements, all linked to those photos. They can track a single person's movements over years. It can also correlate with other people to detect who may be connected to who. Bigdata tracking everyone at all times. Give me a random person snapping street photos any day. Any way you cut it, fixed cameras are more worrisome.