FIELD: information technology.
SUBSTANCE: system comprises: a passage sensor (2), adapted to be placed in the proximity of an opening (A) of the point of sale for generating a passage signal (Sp) when a person (P) passes through said opening (A); imaging means (5) adapted to be placed in the proximity of said opening (A) for acquiring an image (6) of at least one person (P) that passes through said opening (A); connection and control means, for connecting the passage sensor (2) with the imaging means (5) so that, upon generation of a passage signal (Sp), the imaging means (5) acquire the image of the person (P) that is passing through the opening (A); a data source (9) for providing images (8); comparing means (7) for comparing an image (6) with one or more images (8) from the data source (9); and correcting means (10) for preventing counting of any further passages through the opening (A) within a predefined interval (Tm) after generation of a passage signal (Sp).
EFFECT: faster and more reliable monitoring of a point of sale.
13 cl, 3 dwg
