Perhaps U.S. v Jones has some insight. https://en.m.wikipedia.org/wiki/United_States_v._Jones https://en.m.wikipedia.org/wiki/United_States_v._Jones FBI/police

Perhaps U.S. v Jones has some insight. https://en.m.wikipedia.org/wiki/United_States_v._Jones https://en.m.wikipedia.org/wiki/United_States_v._Jones FBI/police put a gps tracker on a guys car for long term tracking. Ruled 4th amendment violation, unanimous. Differing reasons. The trespass reason wouldn’t seem to apply but the long term expectation of privacy would seem to apply. Oral arguments included ‘beeper’ vehicle tracking which is labor intensive, vs gps which they can do automatically behind their desk...