Infrared cameras look into your domicile while the StingRay looks for signals being sent out. They are not looking in to see what is there, they are capturing what is coming out. It is different enough to be litigated up to the Supreme Court.

That being said, I in no way support this. I have no choice but to use my phone which makes me into a tracking target.

In America it turns out we are all targets in order to exclude each one of us from being Terrorists. Police cars now capture license plates and upload them to a central database (plantir), the whole Internet is being captured and held for 3 days at a time while parts are being kept for longer, the outside of mail is being scanned and captured by the USPS, every major mail facility (fedex, ups, etc) are mandated to have federal agents who open mail and then re-seal it so you never know, etc and so on. I have had to double the tin foil on my hat because one layer is just not enough! It is getting crazy.

I also don't support this, but I don't see the distinction. You/your home is emitting the infrared radiation, just like the phone is emitting the signal.