A method, apparatus, system, and signal-bearing medium that, in an embodiment, calculate scores for cells within a program based on a speed at which the cells were presented and a frequency that the cells were presented. The firmware storage medium stores a default image invoked during a boot process and selectively stores a customized image. An information managing part of a controller of an upstream side robot receives information from a container detecting part of a controller of a downstream side robot, and then generates containing cell information. Bacteria and other microorganisms rapidly enter and remain within the nutrient filled interior space of the beads. The signal gateway monitors the media servers, and responsive to determining that a media server has malfunctioned, the signal gateway initiates auto-blocking such that the telephone network does not route calls to the malfunctioning media server. The verifier in turn sends s1 to the intermediary, and the intermediary checks that s1 is a valid digital signature for the user device.