Or perhaps the good old days when there was one phone in the house for everyone and I had three sisters and whenever one of them got a new boyfriend there would be repeated hour long phone calls every day - generally just when I was waiting for an important call.
Or the good old days when you answered the phone only when you heard your ring pattern, and you never knew if the neighbors were listening in on your calls.
Wrong. Police officers can react to anything that is in "plain sight", meaning anything that escapes from your car, be it photons or small particles which we refer to as "scent"
Not true. The U.S. Supreme Court, which ruled in U.S. v. Kyllo (2001) that the police can not use infrared cameras to locate "suspicious" concentrations of heat in private places and then get warrants to search. So anything that escapes is not "in plain sight".
A company is known by the men it keeps.