Wireless communications system and method for controlling communications terminal

A wireless communications system comprising:

• a communications terminal including a communications unit configured to communicate wirelessly with a communications partner terminal;
• a detection unit configured to detect movement of the communications terminal;
• and
• a control unit configured to control the communications terminal so as to vary a communicable area of the communications unit, the communicable area being defined relatively to the communications terminal,
• the control unit being configured to vary the communicable area according to at least a magnitude of the movement detected by the detection unit,
• wherein the control unit is configured to use a communication status of the communications unit with respect to the communications partner terminal as one of parameters for deciding whether or not to vary the communicable area,
• wherein the control unit is configured to, when the communication status indicates that the communications unit is now communicating with the communications partner terminal, fix the communicable area.