An apparatus for monitoring the environment of a person from any dialable telephone includes a small transmitterreceiver which is attached to the person whose environment is to be monitored. This assembly has a vertical intramedullary rod that is inserted through the bottom of the calcaneum, and driven upward into the tibia. The cylinder is received with a pocket defined in a sheath which surrounds the optical fibers. The system receives two or more three dimensional anatomical maps sharing a common plane specified by three or more marker points common to the two or more maps; places one or more marker points on one or more teeth; generates a digital teeth model with the marker points; and aligns the two or more 3D anatomical maps and the teeth model using the marker points. The peak value holding part holds a peak value of the clutch stroke. The device enables a selected one of several associated computers to read and write from the unified memory inside a KVM switch.