The present invention provides a processing apparatus (10) including: a registration unit (12) that recognizes, based on image processing, product discrimination information of a product picked up from a product placing space, and registers the recognized product discrimination information in association with customer discrimination information; and a settlement unit (13) that executes, when it is detected, based on image processing, that a customer having picked up the product performs a predetermined action, a settlement based on a registration content resulting from the registration unit (12).