Operation limiting device, a vehicle, a password generating device, the management system, operation restriction process and operation limiting program

A When the control board of the work vehicle is replaced with a non-approved product, while allowing minimal loading and unloading, the operation limiting device prompting the replacement of the control board of the genuine, the vehicle, the password generating device, management system provides operation restriction process and the operation limiting program. In a work vehicle such as A forklift, the steering control device 220, a judging unit 301, the authentication unit 302, and the operation restriction unit 303. Judging unit 301, the running board to be connected and determines whether the normal substrate. The authentication unit 302 performs the password authentication. Operation restriction unit 303, when the running board is determined to be not normal substrate, to limit the operation of the forklift, the password authentication in the authentication unit 302 is successful, releasing a predetermined period limits operation of the forklift. .FIELD 4