Unauthorized liquid or solid substance detecting device for e.g. shop, has positioning impression drawn/engraved on step shaped mounting base to impose precise positioning of foot of individual to be controlled relative to detecting panels

摘要

The device has a step shaped mounting base (100) to receive a single foot, covered with shoe, of an individual to be controlled. Two symmetrical lateral panels (200) detecting a target material are connected to the mounting base. A positioning impression (400) is drawn or engraved on an upper plane (102) of the base to impose a precise positioning of the foot of the individual with respect to the panels.