A pipeline cleaning and renovating method of the present invention comprises introduction of abrasive particulates by pressurized air through the pipelines to remove the incrustation adhering to the inner surface of the pipelines. The method and system include providing a first pinned layer, a barrier layer, a free layer, a conductive nonmagnetic spacer layer, and a second pinned layer. The controller may comprise a processor and a memory, and may be programmed to allow a person to make a wager, to cause a first video image to be generated on the display unit, and to determine a first value payout associated with an outcome of a game. By spacing the electrode and energizing the electrode appropriately, the charged particles can be accelerated to a degree sufficient to cause the charged particles to embed themselves into the polymer matrix of the medical device. The second scanner may be part of a retinal scanner, so that the image is formed directly on the user’s retina.