This product consists of a host, one or more pairs of special glasses, HDMI cable, network cable, antenna, etc. This product is installed between the signal output terminal and the content carrier. It encodes and encrypts the output signal in a new hardware processing method. The user uses the special glasses provided to encode and analyze the signal and present the confidential information content. This product can connect multiple devices through the network, and a host management terminal controls the use authority and time period of the entire set of anti-camera system. After the user installs the anti-camera system, if there is no anti-camera requirement, he can automatically turn off the anti-camera function of any connected device; It can also be turned on at any time when there is a need for anti-beat. The user can independently set the time range of the system according to the needs, and the output end outside the set time period is a normal display device. Each signal output terminal contains an independent two-dimensional code. If the display device is photographed, the source of leakage can be traced in time according to the two-dimensional code.