Display system, display device and unlocking method thereof

A display system, comprising:

• a user terminal device, is configured to transmit an ultra wideband signal;
• a display device, is configured to receive the ultra wideband signal;
• and
• a server, communicatively connected to the display device, wherein
• the display device is configured to obtain location information of the user terminal device relative to the display device and a user identification code based on the ultra wideband signal;
• the display device is configured to determine whether the location information matches a preset condition, and send a verification request signal containing the user identification code to the server;
• the server is configured to receive the verification request signal, perform a verification process on the user identification code to generate a verification result, and transmit the verification result to the display device, wherein the verification result is configured to indicate whether the user identification code is correct;
• and
• the display device is configured to receive the verification result, and unlock a screen of the display device.

A display device, comprising:

• an ultra-wideband communication unit, configured to receive an ultra wideband signal;
• a storage device, configured to store a preset condition;
• a processor, electrically coupled to the ultra-wideband communication unit and the storage device, wherein the processor is configured to:
• obtain location information and a user identification code based on the ultra wideband signal, determine the location information matches the preset condition;
• a communication unit, electrically coupled to the processor, configured to send a verification request signal containing the user identification code, and to receive a verification result, wherein the verification result is configured to indicate whether the user identification code is correct;
• and
• a screen, electrically coupled to the processor, configured to unlock the screen according to the verification result.