Patent ID: 8150449

Claim:
A wireless communication device comprising: a wireless communication unit that (a) measures a distance to an external wireless communication device, (b) establishes a wireless connection between the wireless communication device and the external wireless communication device if the measured distance to the external wireless communication device is within a first distance from the wireless communication device and exceeds a third distance from the wireless communication device, the third distance being shorter than the first distance, (c) disconnects the wireless connection established between the wireless communication device and the external wireless communication device if the measured distance to the external wireless communication device is within the third distance from the wireless communication device, and (d) disconnects the wireless connection established between the wireless communication device and the external wireless communication device if the measured distance to the external wireless communication device exceeds a second distance from the wireless communication device, the second distance being longer than the first distance; and a control unit that (a) controls the wireless communication device based on a first event indicating that the wireless communication unit has established the wireless connection between the wireless communication device and the external wireless communication device, and (b) controls the wireless communication device based on a second event indicating that the wireless communication unit has disconnected the wireless connection established between the wireless communication device and the external wireless communication device.