On the other hand, if you outlaw the collection, retention, and sale, transfer, or other trafficking in information derived from large scale face recognition, t

On the other hand, if you outlaw the collection, retention, and sale, transfer, or other trafficking in information derived from large scale face recognition, then the availability of the information will decrease radically. People deploy or obtain access to large scale privacy-invading data sets because they can legally monetize it. If it becomes illegal to collect the data and illegal to be on either side of a transaction, then the information becomes a liability instead of an asset. And outlaws don’t have enormous fleets of cameras.