The customer pays and receives a receipt at the checkout kiosk. They are an alternative to the traditional cashier-staffed checkout. Many stores have a number of checkout stations. The most obvious place supermarket layout influences consumers are at the checkout. This is intended for an easier and more convenient way for checkout. This can reduce the length of checkout lines and wait times. In supermarkets there are two types of aisles, food aisles and checkout aisles. A variant is exit control, e.g. of a shop (checkout) or a country. Video recording equipment and gaming consoles are available for checkout. The antenna suffered a failure during normal checkout and setup on orbit. The technology is meant to eliminate the need for checkout lines. OS/2 was used in checkout systems at Safeway supermarkets. The Foodelectric concept is a clear predecessor to self checkout. He did manage the highest possible checkout of 170 during the tournament. This mission marked the first checkout of the MMU and Manipulator Foot Restraint (MFR).