TMUDFD is particularly well-suited for use in supply chain management and other kinds of logistics management involving multiple stages of hand-offs from one station to another or from one party to another. All interaction and work activity and documentation can be captured and recorded digitally and automatically with all of TMU’s functions for use in posterity for accountability, evidence, training, etc., as required. TMUDFD’s Work Flow can be designed to meet the requirement effectively and efficiently and quite easily.