US Patent 11983597 Method for manually reading a code, and associated device

A method for manually reading a code marked on an article having a first main face on a first side and a second main face, opposite the first main face, on a second side, wherein, with the article being fixed, a portable device equipped with an optical imaging system including at least one optical sensor is positioned on the first side of the article so as to place the optical sensor facing the code in a reading direction corresponding to the observation direction of the imaging system, and wherein, with the code being illuminated by a light source located on the second side of the article, at least one image of the code is acquired by the optical imaging system.