1. A communication system, implemented by physical and tangible functionality, for indicating a direction of awareness of a first entity, comprising: an explicit control processing module configured to receive an explicit control input from at least one explicit input mechanism, and in response, provide an explicit control output, the explicit control input reflecting an express indication of the direction of awareness of the first entity; an implicit control processing module configured to receive an implicit control input from at least one implicit input mechanism, and in response, provide an implicit control output, the implicit control input reflecting an inferred indication of the direction of awareness of the first entity; a mode selection module configured to select from the explicit control output and the implicit control output, to provide a selected control output; and an output mechanism configured to adjust a position of an indicator based on the selected control output, the indicator assisting at least one second entity in determining the direction of awareness of the first entity.