A story of repo cars driving and scanning tags has been seen on HN first time many years ago. Meanwhile a buddy of mine works for a "secret" company that has cars driving around ten most criminal infested cities (such as Detroit) and mass-scanning people's faces behind mirror glass. A single car in a busy city is able to scan over 25,000 people daily. This info is later fed into the system and usual clients are Sheriff offices and bounty hunters. I wish someone like VICE did the story on it, but my buddy only showed me screen shoots, no company name, nothing.

In 2019 you cannot assume you have any sort of privacy once you leave your door step, literally.