According to Cameron Chell, CEO of Canadian drone maker Draganfly, some platforms can “measure a person’s heart rate, breathing, blood pressure and oxygen levels from 500 meters away” (approximately 1,640 feet).
Certainly you need a warrant for...
Maybe they can detect, maybe they can't. My point has reached the point where you need a warrant and probable cause to"search" a citizen for those type of intrusive readings. A bit different than reading facial expressions and body language...
Many people say, well if you are standing outside and can be seen by a person or a drone from any location with any technology then you are in plain view and have zero reasonable expectation of privacy so its all on you. It is the classic...