Embodiments of the invention also generally provide a solar cell formation process that includes the formation of metal contacts over heavily doped regions that are formed in a desired pattern on a surface of a substrate. A mounting unit is cast in plaster material with a vertical duct extending upwardly from a light-exit opening in a horizontal face flange that becomes plastered in place in the ceiling. An inflation cage is fixed with respect to the chassis base. An identifier and biometric code of the customer are transmitted to the authorization service provider in addition to the amount which is to be transferred. Still another aspect of the invention is that contact information can be distributed to registered users in a common format. The other nodes, detecting the changed session number, now know that there has been a change in the network.