Clearing and settlement device, and unmanned store system

A cost calculation and payment device for performing processes related to cost calculation of merchandise items that a user has selected from a sales area and face authentication for payment, the device comprising:

• a main body provided with a placement portion on which the user places merchandise items;
• a first camera configured to capture an image of the merchandise items placed on the placement portion;
• a second camera configured to capture an image of a face of the user;
• a controller configured to perform a process related to cost calculation by recognizing the merchandise items in question based on a merchandise item image acquired by image capture by the first camera and to perform a process related to face authentication based on a face image acquired by image capture by the second camera;
• and
• a display for displaying a cost calculation result and a payment result acquired by the controller;
• and
• a projector for projecting an image onto the placement portion,
• wherein the display is disposed in a vicinity of the placement portion,
• the second camera is configured to capture an image of the face of the user looking at the display, and
• the controller detects positions of the merchandise items based on the image captured by the first camera and causes the projector to project prescribed images to vicinities of the merchandise items.