Yes, but I'm not sure you can catalog all the features of the people you recorded and compile this into a real-time database that can be queried with relatively

Yes, but I'm not sure you can catalog all the features of the people you recorded and compile this into a real-time database that can be queried with relatively little oversight. I'm not a legal expert, but I suspect there would be both invasion of privacy (if private) and warrantless search/4th amendment/civil rights concerns (if law enforcement) concerns.