The how probably isn't so hard if you are a state actor. You won't be 100% effective, but if you make it a felony to possess systems that can do it, to use sys

The how probably isn't so hard if you are a state actor. You won't be 100% effective, but if you make it a felony to possess systems that can do it, to use systems that can do it, to possess any data that can be tied to such a system, etc., etc. it's quite likely that usage would drop to nearly nothing.