A process is disclosed for pretreating lignocellulosic biomass. The method is used in conjunction with a process for producing acetone and phenol from cumene. After authenticating, a desktop channel grid framework is displayed on the user platform. The fix Data Matrix code and the display are aligned such that the static pattern of the first Data Matrix code and the predetermined ones of the pixel elements, when switched, forms a second readable Data Matrix code, which is different from the first readable Data Matrix code.