FIELD: physics.
SUBSTANCE: invention discloses a magnetic sensor, a device and a method of checking a valuable document. The magnetic sensor (10) for checking a valuable document (1) has a first row measurement-conversion unit (12) and a second row measurement-conversion unit (14). The first measurement-conversion unit (12) has multiple magneto-sensitive elements (13) with a first direction (H1) of maximum sensitivity. The second measurement-conversion unit (14) has multiple magneto-sensitive elements (15) with a second direction (H2) of maximum sensitivity different from the first direction (H1) of maximum sensitivity.
EFFECT: facilitating distinction of valuable documents with magnetic codes formed by magnetic materials with different coercitive forces.
19 cl, 5 dwg
