Mobile communication device having a direct communication capability

A mobile reception device comprising:

• a body;
• driving means for generating a driving force to move said body;
• detecting means for detecting contact pressure of said body with an external devices;
• and
• receiving means for receiving information from said external device by determining change of said contact pressure detected by said detecting means.

A communication system comprising:

• a first mobile communication device that includes a first body, first driving means, first detecting means, first receiving means and first transmitting means;
• and
• a second mobile communication device that performs communication operations with said first mobile communication device, said second mobile communication device including a second body, second driving means, second detecting means, second receiving means and second transmitting means,
• wherein:
• said first driving means is for generating a first moving force to move said first body;
• said first detecting means is for detecting a first contact pressure of said first body with said second body;
• said first receiving means is for receiving information from said second mobile communication device by determining change of said first contact pressure detected by said first detecting means;
• said first transmitting means is for transmitting information to said second mobile communication device by controlling said first driving means to vary a magnitude of said first moving force to vary said first contact pressure with said second body in accordance with said information;
• said second driving means is for generating a second moving force to move said second body;
• said second detecting means is for detecting a second contact pressure of said second body with said first body of said first mobile communication device;
• said second receiving means is for receiving information from said first mobile communication device by determining change of said second contact pressure detected by said second detecting means;
• and
• said second transmitting means is for transmitting information to said first mobile communication device by controlling said second driving means to vary a magnitude of said second moving force to vary said second contact pressure with said first body in accordance with said information.

A mobile transmission device comprising:

• a body;
• driving means for generating a driving force to move said body;
• detecting means for detecting contact pressure of said body with an external device;
• and
• transmitting means for transmitting information to said external device by controlling said driving means to vary said contact pressure in accordance with said information.

A method for communicating between a device with an external device, said method comprising said device:

• maintaining a constant position toward said external device;
• detecting a contact pressure with said external device during a period of time;
• generating, responsive to a change in said detected contact pressure during said period of time, information based on said change in said contact pressure;
• and
• varying said contact pressure with said external device in accordance with information when said detected contact pressure is substantially constant during said period of time.