Method for recovering treated metal silicide surfaces or layers are provided. The system includes a mobile device comprising an electronic wallet and a smart card, with the smart card including resident smart card application. The nut is formed with a screw groove. At each interference filter, an incident light is split into a light component to be transmitted and a light component to be reflected. The invention further relates to screening methods for identifying agonists and antagonists of NKX3. An evaluation value that evaluates tonality between a color value estimated in correspondence with an input color value of a grid point of interest in the input color space and color values estimated in correspondence with input color values of grid points adjacent to the grid point of interest is calculated.