Apparatus for a wheelchair foot rest that has two positions: stored and deployed. An interface unit is then used to receive communications connection information from the connection unit and deliver select portions of the communications connection information in a select format to the Relationship Management system. A temperature compensation and motion damping circuit comprising feedback resistors and a thermistor. The diagnostic assays may further involve manipulation of membrane potential by incubation of cells in K+-free buffer andor incubation with one or more compounds that alter Na+K+ ATPase activity. The interrupt logic receives the time-out signal and transmits an interrupt signal to an external device. The unified browsing space is also searchable.