The invention relates to an assembly for incorporating into a solidified construction element, to a construction element comprising such an assembly, and to a method for producing said construction element. According to the invention, the assembly comprises an electronic system (1), said system (1) comprising a chip. It is characterised in that it also comprises a support part (2) provided with a positioning element (3) for said system (1) on one (4) of the so-called system-receiving faces thereof, and on the face (5) opposing said receiving face (4), a distinctive sign for locating the electronic system, which is visible from outside the construction element.