A method and a system are provided for feeding a biomass material feed into a fluidized bed gasifier. A light source defines a plurality of vertical row groups each having no black row, a white row and a plurality of adjacent rows where the intensity systematically decreases to a lowest level where light blocking defects can be seen and than increases systematically to the next white row. The EPP is operative to store the terminal master key in the EPP for use with decrypting at least one further key received from the host banking system. In one embodiment, the high speed rotational abrader uses a tissue-selective abrading surface that abrades or cuts bone but does not cut soft tissue. The received transaction includes a request to receive a URL.