A method in a video gaming system including a processor, a memory and a sensor system for capturing body motion is described. The glass is produced much faster and in much larger sizes than present technology for making porous glass. For example, a silicon nitride layer of a low-E coating may be ion beam treated. The adaptor is arranged to mount that vaporizer on the machine and to couple the horizontally oriented pin to an associated vertically oriented pin of the interlockexclusion system. Two fibers connected as a Michelson, Mach-Zehnder or equivalent interferometer where one fiber is coupled to atmosphere while the other is not for being hermetically sealed in a tube, permit common mode rejection of noise from temperature changes and strain, including ground vibration. When the needle is removed, the metal ring remains in place, permitting electromagnetic tracking of the catheter as it is fed through the vascular system.