In recent years, the security control of computer equipment and network has been basically mature, but the technical means to prevent the screen from being stolen are still weak, and the incidents of computer screen display information being photographed and leaked are also frequent, causing major losses to national security and enterprises and institutions. In response to this problem, we have launched an intelligent anti-theft photo system, which is a special device for human-computer information visual interaction to prevent the theft of photos, photos and secrets. When someone uses mobile phones, cameras, video cameras and other equipment to take pictures in violation of regulations, the device will immediately automatically hide the displayed content, effectively prevent screen information from being captured and stolen, and can identify users through face recognition. The device has no external network access, is physically isolated from the computer host, and does not send out information, and the information will not be illegally obtained by people; The product has the functions of pre-prevention, in-process disposal and post-tracking, providing complete security protection for screen information. This series of products has passed the information technology product/system security test of the National Information Security Research Center, has dozens of invention patents, and has passed 3C certification.