Japan launches wearable lie detector I know it's true

According to foreign media reports, a company in Tokyo, Japan, recently developed a Kokoro Scanner (inner scanners) of the head-belt-type lie detector, the appearance of a bit like headphones, can detect the pulse frequency of people, once the subjects lie, will light up the red warning. The device can be worn on the forehead and the scanner will first observe the pulse to establish a baseline and compare it with the heartbeat changes to determine if the person wearing the device is telling the truth. The picture is for the subjects to wear this inner scanner. When the subject's pulse is normal, the machine will display a green light, indicating that the person is telling the truth, and may display a yellow light when lying, and if the device determines that the person is lying, it lights up the red light. It is reported that the instrument has been fully listed, the initial price set at 45 U.S. dollars.