A method and system in an application service provider system for regulating the dispatching of event notification messages that generate return contacts. Each photon emitter includes a spring, a Beta source disk, a scintillator disk adjacent the Beta source disk, and a neutral density filter over the scintillator disk, all of which are encapsulated in a cylindrical chamber with the filter adjacent an opening on one end of the chamber and the spring biasing the Beta source disk and the scintillator disk toward the opening. An electromagnetic coil has a plunger. Dynamic content having a bit-depth greater than the bit-depth of the content display unit is parsed into sub-pixels for display on the content display unit.