Engineers from the South Korean National Institute of Science and Technology Ulsan came up with a technology that checks body temperature using a fingerprint scanner installed in the smartphone. With its help, the protection of the gadget will increase, and it will be much more difficult or impossible for craftsmen to unlock the device with the help of a dummy or finger of the deceased (practiced by law enforcement agencies). Development determines the temperature in the range from 30 to 45 degrees Celsius. The system is capable of measuring microscopic impulses emanating from the fingers. This is necessary to further protect the gadget. Now, third parties, even if they receive a fingerprint from the owner of the smartphone, will encounter the difficulties of deceiving a fingerprint sensor. This technology is not suitable to clarify the overall temperature of the human body. So its introduction into applications of the HLS format is impossible. True, the development has a nice bonus. It integrates into the scanner, which is built into the display (as in some smartphones Vivo and Mi8 Explorer Edition from Xiaomi). When and where this development debuts, is not specified.