A support apparatus for a head of a user placed in a wash basin maintains the neck of the user in a neutral position, thereby minimizing head or neck injuries. If a detected source other than the data interface is impressing battery voltage on the tip-ring system, the circuitry disconnects the data interface’s battery source and produces a message that another source is VBH. The substrate has a fluid-feed slot extending between the first surface and the second surface with the fluid-feed slot being defined, at least in part, by a central portion and one or more capillary channels in fluid flowing relation to the central portion.