LG has revealed more details about the "Time of Flight" sensor that will likely power the G8 ThinQ's touchless gestures. Built by LG's Innotek division, it reflects infrared light off of a subject, measures how long it takes to return and uses the data to calculate depth. LG said that the tech works over "long" distances, while consuming less power than other 3D tech. It differs from Apple's TrueDepth Face ID tech, which beams thousands of laser dots at a subject, then measures the distortion to calculate depth. Time of Flight, by contrast, measures distances like radar, and is similar to what Microsoft used in its Xbox One Kinect. It can, in theory, deliver more accurate results for biometric scans, augmented reality and more.