talked to a Sysco driver today and he showed me his new trailer camera. Mounted up on the front of trailer in the freezer comp. he said there is twice the uproar with these than the truck cameras. But can only watch you in the front or if you leave bulkhead open.so it's really basically useless since you can stack a box in front of it.He also said there putting a lot more blankets on pallets even refrigerated pallets and carrying these new temp monitors around the trailer.