Quote Originally Posted by madeline
If that was true then all plants would also retain heat. Their is no special metabolism in cannabis that raises its heat any higher than ambient temps. Test it yourself; stick a thermometer into the plants rectum and see if there is any difference with air temp.
Cannabis plants give off a unique infrared heat signature that any trained operator can recognize. a Thermometer in the soil wouldnt detect anything, its the heat that is being given off by the plant itself that is what they are detecting.

Police were also using this technology to detect house growing operations by looking at the external walls of houses, but the supreme court ruled these as illegal searches and police can no longer use it in that method.