Example of horizontal monitoring of open spaces: Junk yard

To prevent valuable reusable raw materials from being stolen from junk yards, a 2D laser scanner mounted on a column, for example, monitors the area to be secured and activates an alarm if the field is breached. Since the sensor can be easily transported and mounted, it can be moved to protect different monitored areas if necessary. When combined with an RFID-reading device, any authorized personnel with identification containing the right transponders can access the relevant monitored area without triggering the alarm.