Patent ID: 8044803

Claim:
An article sales data processing apparatus comprising: a wireless tag reading unit configured to read data in a wireless tag attached to an article; a processing unit configured to process sales data for the article sold as one transaction, on the basis of the data in the wireless tag read in the wireless tag reading unit; a sales data storage unit configured to store the sales data for the article sold as one transaction; a display configured to display the article sales data stored in the sales data storage unit; a checkout key configured to declare the checkout of one transaction; a selection accepting unit configured to accept an input on whether to select each sales data displayed on the display when the checkout key is entered and change the display so that it is configured to receive the input from the user after the checkout key is entered, the input corresponding to the user's selection of sales data; a judgment unit configured to judge the wireless tag of an article whose sales data has been selected by the selection accepting unit as a tag to be invalidated, and the wireless tag of an article whose sales data has not been selected by the selection accepting unit as a tag not to be invalidated; an invalidation unit configured to collectively invalidate all wireless tags judged to be invalidated by the judgment unit; and a checkout processing unit configured to execute checkout process of one transaction after invalidating the wireless tag which has been judged to be invalidated by the invalidation unit.