2005-255339 is referenced by 2 patents.
PROBLEM TO BE SOLVED: To provide a configuration capable of simply specifying a driver of a machine and gathering machine information.SOLUTION: An antenna 22 and an RFID reader writer 21 are provided on the machine 10. When a driver carrying an RFID tag 1 gets on the machine 10, the RFID reader writer 21 reads driver specifying data from the contents stored in a built-in memory of the RFID tag 1 through the antenna 22 to specify the driver. The RFID reader writer of the machine writes machine specifying data of the machine 10 and loading and unloding work information by the machine into the RFID tag 1. An antena 42 and an RFID reader writer 41 are also provided on a management office side. Upon completion of use of the machine 10, the RFID reader writer 41 on the office side reads the driver specifying data and the loading and unloading work information from the driver's RFID tag 1 and stores the loading and unloading work information in a storage means by associating it with the driver specifying data.