"(3) cases in which the technology is used in public places or other locations at which the FBI deems there is no reasonable expectation of privacy." How could

"(3) cases in which the technology is used in public places or other locations at which the FBI deems there is no reasonable expectation of privacy." How could they ensure people not in public places would not be targeted? Or do they just mean that as long as the system is deployed in a public place they can do whatever they want. So if they make something that can see through walls into every room of your house, it is OK as long as it is deployed somewhere public like a utility pole...