Patent ID: 7868751

Claim:
A contact-free data communications system comprising: a data communications device located in a predetermined place; and a contact-free identification tag; the data communications device comprising: a positional information acquiring circuit acquiring positional information between the data communications device and a destination; and a data transmitter transmitting an electromagnetic wave for providing power and transmitting the positional information of the data communications device acquired by the positional information acquiring circuit to the contact-free identification tag in a surrounding area of the data communications device; the contact-free identification tag comprising: a positional information receiving circuit receiving positional information transmitted by the data communications device; a power generator generating driving power out of the electromagnetic wave for providing power that is transmitted by the data communications device; a positional relationship information generator based on the positional information that is received by the positional information receiving circuit; a display displaying positional relationship information generated by the means for generating positional relationship information; a data storage medium that is nonvolatile for storing data in the data storage medium; a destination information input device to the contact-free identification tag, wherein the positional relationship information generator generates the positional relationship information based on the positional information transmitted by the data communications device and the destination information input by the destination information input device.