Abstract: A check-out device includes a scanner for reading an article code fixed to an article, an entry conveyor for conveying the article after reading the article code, a weigh scale for measuring weight of an article on the entry conveyor to produce measured weight data, a RAM for storing article data of various articles, each article data including an article code and reference weight data, and a processing unit for obtaining from the RAM the reference weight data of the article corresponding to the article code, comparing the obtained reference weight data of an article with the measurement weight data of the same article, and performing a sales processing for the article whose article code is read by the scanner after confirming that the article whose article code is read is the article as is on the conveyor.

Abstract: A check-out device includes an input section having a customer operating panel, for sequentially inputting article codes of articles to be purchased, upon request from the customer operating panel, and a settlement section spaced away from the input section, for performing registration and settlement of the purchased articles according to the article codes input by the input section. The check-out device further includes a control section for causing the input section to terminate inputting of the articles in the case where a blank period during which no article code is input exceeds a preset time length.