Abstract: A device and method for reading three-dimensional information involves generating a variable magnetic field in a Cartesian coordinate system and coaxially placing first and second magnetometric sensors made up of three bi-orthogonal receiver induction coils each such that a point on the device, hereinafter referred to as a peak point, is superposed on a point having unknown coordinates. The unknown coordinates are identified based on a generalized information signal E.sub..SIGMA. =e.sub.1.sup.2 +e.sub.2.sup.3 +e.sub.3.sup.2, where e.sub.1 (i=1, 2, 3) is the amplitude of signals induced in the three bi-orthogonal receiver induction coils in each of the magnetometric sensors.