The invention relates to a method of decoding at least one image of a physical object as an action executable by a mobile terminal. According to the invention, such a method comprises the following steps: establishment of a bidirectional communication between said terminal and a translation server, said establishment step comprising the following substeps: capture of said image or images of said physical object by said terminal; transmission, from said terminal to said translation server, of said image or images captured; reception, by said terminal, of at least one item of information representative of an action executable by said terminal, termed the action information, and corresponding to a decoding, by said translation server, of said image or images transmitted.