Wearable information input device, information input system, and information input method

An information input system comprising:

• a wearable information input device worn on an upper limb of a user, the device including:
• a contact detecting unit configured to detect contact with the upper limb by an input unit, the input unit being used by the user to input information;
• a position detecting unit configured to detect a position of the input unit while the input unit is in contact with the upper limb;
• and
• a communication unit configured to transmit information about the position detected by the position detecting unit;
• and
• an external device including an input recognizing unit configured to recognize input contents based on the information about the position transmitted from the communication unit.

An information input method using a wearable information input device worn on an upper limb of a user, the method comprising:

• detecting contact with the upper limb by an input unit, the input unit being used by the user to input information;
• detecting a position of the input unit while the input unit is in contact with the upper limb;
• generating a trajectory of motion of the input unit based on information about the detected position;
• and
• recognizing input contents based on the generated trajectory.