Electronic intermodal transportation shipping container security and tracking system for monitoring and reporting on the condition and precise location of sealed/enclosed shipment devices and their contents during transit from point of container stuffing to point of final deconsolidation comprised of sensors for monitoring the conditions within the container, a data-processing controller with logging capability, for collecting, storing, and processing the sensor data and declaring alarms, a two-way communications device, which is capable of passing and receiving data and text messages from inside the container, and an internal or external modem with antenna, which is capable of communicating locally as well as to and from remote communication interfaces, for indicating the precise location of the container and for passing and reporting status and alarms to hand-held or portal reading devices and to wireless cellular or satellite communications devices, which can then transmit to a central monitoring and response location for collection, consolidation, processing, analysis, and possible further communication of an appropriate response