> This is not true. The question is whether you have a "reasonable expectation of privacy." If you do, then the government needs a warrant. This is why the government can't tap a payphone without a warrant even though it is in public.

"Reasonable expectation of privacy" covers things like restrooms. Not highways, streets, parking lots, etc. This isn't relevant for Flock.

"Reasonable expectation of privacy" covers whatever the public believes is reasonable. The original case creating this doctrine was about phone booths.