US Patent 10354131 Product information outputting method, control device, and computer-readable recording medium

A product information outputting method includes: detecting that a hand of a person is present in a first area that is set according to a position of a product; and when the hand of the person is not detected in any one of the first area and a second area and the product is not detected in a product detection area after presence of the hand was detected based on the detecting, determining that the product has been moved out of the product detection area, the second area containing the first area, the product detection area set according to the position.