Still doesn't change the fact that after my kid walks to school, there's no database that school can query to figure out his exact route there. It's one thing

Still doesn't change the fact that after my kid walks to school, there's no database that school can query to figure out his exact route there. It's one thing to snap a frame of a license plate on a freeway that the entire city uses. It's another to get a positive face detection of one kid out of a whole city, who is probably wearing a hood and staring at the ground, while walking down quiet neighborhood streets on a random side of the road under tree cover for 80% of the time. Gait is even harder.