"Heat signature" refers to the pattern of heat given off by an object or a living being. It is a way of identifying or detecting something or someone based on the heat they emit. Full definition
There are, of course, numerous other ways to get out of seemingly impossible situations in Heat Signature, check out our review to find out more about this PC - exclusive. (gap4.com)
Some hypotheses also suggest that the first objects to form may have been black holes, which would leave a different heat signature, she said. (scientificamerican.com)
The module in question has a 13 - megapixel resolution, which can measure heat signatures as far as 100 feet. (phoneradar.com)