Identification system

An identification system comprising:

• a wearable device that is worn on head of a user and is configured to detect an orientation of the head of the user;
• and
• a mobile device that is worn on body of the user separately from the wearable device,
• wherein the mobile device includes:
• an image capture device;
• and
• processing circuitry configured to:
• acquire:
• first orientation information indicative of an orientation of the head of the user, the orientation being detected by the wearable device;
• and
• second orientation information indicative of an orientation of an optical axis of the image capture device;
• and
• identify, based on the first and second orientation information, an eye-gaze area that is gazed at by the user within an image captured by the image capture device,
• wherein the first orientation information indicates rotation angles of the wearable device in an absolute coordinate system,
• wherein the second orientation information indicates rotation angles of the image capture device in the absolute coordinate system, and
• wherein the processing circuitry of the mobile device is configured to identify the eye-gaze area based on subtracting the rotation angles of the wearable device from the rotation angles of the image capture device.