The manipulation of electron spin offers new dimensions for basic and applied research, and the potential for new capabilities for electronics technology. Interest in digital electronics applications has spread to a variety of information systems and generated need for new devices, such as a Spintronic device with power gain. This motivates transprt studies of spin polarized electrons in a high mobility two dimensional electron gas (2DEG). Recent experiments have used an FET-like geometry with ferromagnetic metal source and drain, as spin injector and detector, on an InAs single quantum well (SQW) channel [1], and a measurement of the spin dependent electron mean free path in the SQW has been made. An overview of Spintronics, including discussions of integrated applications in memory, reprogrammable logic, system-on-a-chip, and biotehchnology, provides a broader context for this work.