Anti-peeping device and control method

An anti-peeping device, comprising:

• a plate-shaped substrate;
• a magnetic field generating device disposed on the plate-shaped substrate for generating a magnetic field;
• a plurality of light blocking walls disposed on the plate-shaped substrate to be within the magnetic field, the plurality of light blocking walls being disposed in parallel with and spaced apart from one another, a first end of each light blocking wall being deflectably connected to the plate-shaped substrate, and each light blocking wall being configured to be changeable in its deflecting direction and/or deflecting angle in response to a change in a direction and/or an intensity of the magnetic field;
• a magnetic field control device for controlling the direction and intensity of the magnetic field;
• and
• a user input device for receiving an instruction from a user,
• wherein the magnetic field control device is configured to control the magnetic field generating device to adjust the direction and/or the intensity of the magnetic field based on an instruction received from the user input device, so as to change the deflecting direction and/or the deflecting angle of the light blocking walls.