Patent ID: 8004393

Claim:
A method for determining if the enclosed cargo area of a vehicle has been accessed during transit between a first location and a second location, the vehicle having an enclosed cargo area which can be secured to prevent access thereto and having a digital counter with a display, means for setting the number on the counter, means for sensing whether the cargo area has been accessed and for changing the number on the counter in response thereto, the method comprising the steps of: (a) Loading cargo into the vehicle cargo area with the vehicle at the first location, (b) Securing the cargo area of the vehicle; (c) Setting the number on the counter after the cargo area has been secured; (d) Forwarding the set number to the second location by means separate from the vehicle; (e) Changing the number on the counter if the cargo area has been accessed; (f) Moving the vehicle to the second location; (g) Observing the number on the display when the vehicle reaches the second location; (h) Comparing the forwarded number and the observed number; and (i) Determining whether the forwarded number and the observed number are the same or different.