A desirably sanitary environment such as a hospital will have hand hygiene stations dispersed in some of the patient rooms, hallways, common areas, staff bathrooms and the like. The adhesive may be a heat activated film. The computer system then may determine, based on music purchase history associated with a user account, whether a selected song associated with the internet radio station has been previously purchased. In one aspect, an output of the regulator is provided between a positive voltage line and a return line. An information interface system establishes a communications channel with the observer, such as by receiving a telephone call from the user and generating audio prompts.