in an identification medium for identifying an authenticity of an object either visually or optically by using an identification device , high polymer cholesteric liquid crystal is applied onto the object , onto a sticker adapted to be affixed to the object or onto a base for hot stamping onto the object , and the high polymer cholesteric liquid crystal is patterned , and / or a graphic representation layer such as a figure and letter is formed under or over the high polymer cholesteric liquid crystal to enhance the aesthetic quality of the identification medium or the object , and improve the capability to identify and prevent forgery .