Abstract: The present invention is a system including a modular hardware platform consisting of Global Positioning System (GPS) receiver, a programmable micro controller unit, a communication module and a software platform, programmable on site to track, monitor and control access to cargo containers, truck trailers and similar transportable devices to curtail theft, pilferage and from intercession by third parties such as terrorists. The system enables access to the interior of a container to a digital key which contains an authorization password to initiate access to the container. The system may be programmed such that access is denied until the container reaches a preprogrammed destination.