To monitor the action of employee or customer or to evaluate working conditions and to easily and surely reflect them in salary or official commendation by providing data showing the moving amount or action range of customer or employee by processing signals detected by a sensor with a CPU.

A sensor 2 detects equipment 3, which are carried by employees A-E and can be detected by the sensor, or special uniforms or caps worn by the employees A-E. The detected signals are processed by the CPU, the confirmation showing which signals belong to which employees A-E and the track showing the moving amount, and moving range of employees are displayed on a display, and the provided data are stored in an internal storage device or an external storage device. At this CPU, the working conditions are evaluated by respectively comparing the moving amounts and moving ranges of respective employees. Besides, the working conditions are evaluated by comparing the standard operation amount of employee or customer registered in advance with the moving amounts and moving ranges of respective employees provided by the sensor 2.