Dairy and ice cream products are most vulnerable to tampering or contamination while beyond our control in the retail display cabinet. Remember the Tylenol tampering deaths? Both raw milk and packaged product transportation security is primarily an enhanced, more formal approach and a better-documented extension of the product quality assurance/"cold chain" training and protection you should have been doing all along.
A combination of on-board sensors, Global Positioning Systems, RF product tags, cellular and satellite communications and routing systems, all commonly available today, enables dairy or ice cream companies to know: Where their products are; how cold they were when loaded and during transport; have there been any unauthorized stops, route deviations or door openings while in transit; each authorized person who opened the truck body or trailer doors/where and when it happened; what time the delivery arrived at the customer location; how long did the driver have to wait to unload; how long to complete the delivery; who accepted it at what time; and product core temperature at delivery. It should be noted the same security technology and protocols can and should be applied to in-bound raw milk farm-to-market pick up and over-the-road tanker transport as well.