I don't understand. Aren't computers already doing this? My wall thermastat, that controls my heater, is run by a computer chip.
OP, if you can buy this item on EBAY for $7, I would think that itis already being mass produced.
Also, back in the '80s, I purchased a board for my PC that was able to read temp, and displayed the auras from the human beings who ware using the
computer. I don't remember the name or the brand of the program or hardware, but I'm sure it's still available in a much more expensive and higher