A program for controlling operations of a contact-free communications system, comprising:
- acquring positional information of a data communications device;
- receiving positional information that is transmitted by a data communications device;
- generating driving power out of an electromagnetic wave for providing power that is transmitted by the data communications device;
- generating positional relationship information based on the positional information that is received;
- displaying positional relationship information that is generated by generating the positional relationship information;
- and
- storing data in a data storage medium that is nonvolatile.