“Drones” under 0.55 pounds do not require certification, a license number, or any sort of license for the operator. So, most likely, based on size, the flying Superman wouldn’t require one.
0.55 pounds is pretty lightweight. About 80% of my and my spouses RC model collection required official numbers after the new rule went through.
It seems to me to be similar to using an infrared detector to search out grow-ops and then using the information gathered to get a search warrant. It also seems to me that a grower could defeat this by funneling the generated heat 1000’ into the ground using a heat pump. Kind of geothermal in reverse.