Method, electronic device, and computer program product for monitoring authentication based on radar

An electronic device, comprising:

• a radar apparatus;
• a processor;
• and
• a memory coupled to the processor, wherein the memory has instructions stored therein which, when executed by the processor, cause the electronic device to execute actions comprising:
• determining that a first object authenticated by an electronic device is accessing the electronic device;
• in response to a second object being detected within a detection range using the radar apparatus, determining, based on a detected signal, that the second object is a person;
• determining a distance and an angle between the second object and the electronic device based on an azimuth signal in the detected signal;
• in response to determining that the distance is less than a first distance threshold and the angle is less than an angle threshold, determining, based on a biological feature signal in the detected signal, whether the second object is trustworthy;
• and
• deauthenticating the first object in response to determining that the second object is untrustworthy.

A computer program product tangibly stored on a non-transitory computer-readable medium and comprising machine-executable instructions, wherein the machine-executable instructions, when executed by a machine, cause the machine to perform a method comprising:

• determining that a first object authenticated by an electronic device is accessing the electronic device;
• in response to a second object being detected within a detection range using a radar apparatus of the electronic device, determining, based on a detected signal, that the second object is a person;
• determining a distance and an angle between the second object and the electronic device based on an azimuth signal in the detected signal;
• in response to determining that the distance is less than a first distance threshold and the angle is less than an angle threshold, determining, based on a biological feature signal in the detected signal, whether the second object is trustworthy;
• and
• deauthenticating the first object in response to determining that the second object is untrustworthy.