Abstract: A system for tracking objects. A plurality of electrical receptacles are provided each at a corresponding storage location in the container. A plurality of object tracking units are provided, each having a plug capable of mating with any one of the electrical receptacles. Each object tracking unit having an object attachment member to attach to an object to be tracked and a memory device storing a unique identifier which can be accessed via the data line. A controller couples to the electrical receptacles to read the identifier of a memory device of an object tracking unit when its plug is installed in any electrical receptacle.