A map evaluation system is equipped with a car navigation device and a map evaluation device. There are three types of areas: work areas, staging areas, and edition areas. The moveable base member allows the scanner to be moved without moving the cash drawer housing. The transmitting shaft is rotatably mounted in the barrel and has a driving disk and an eccentric rod. Failover to a second, operational LAN controller can be achieved by monitoring the status of the LAN controllers, and using a selector to couple a different LAN controller to a platform controller if the LAN controller currently coupled to the platform controller fails.