Karlsruhe Institute of Technology researchers have used the heat from one’s face to enable facial recognition in darkness. Thermal imaging creates an infrared picture, which can then be matched to a photograph taken in the light.
In a recent study, a “deep neural network” accurately identified faces in the dark 80 percent of the time when shown a large number of photos. However, the technology is at an early stage, and was only successful 55 percent of the time when presented with a single image.