Point of sale display

A point-of-sale display (POS) is a specialized form of sales promotion that is found near, on, or next to a checkout counter (the "point of sale"). They are intended to draw the customers' attention to products, which may be new products, or on special offer, and are also used to promote special events, e.g. seasonal or holiday-time sales. POS displays can include shelf edging, dummy packs, display packs, display stands, mobiles, posters, and banners. POS can also refer to systems used to record transactions between the customer and the commerce.
Examples

Usually, in smaller retail outlets, POS displays are supplied by the manufacturer of the products, and also sited, restocked and maintained by one of their regular salespersons. However, this is less common in large supermarkets as they can control the activities of their suppliers due to their large purchasing power, and prefer to use their own material designed to be consistent with their corporate theming and store layout.

Common items that may appear in POS displays year-round are batteries, soft drinks, candy, chewing gum, magazines, comics, tobacco, and writable CDs and DVDs. These displays are also useful in outlets with limited floor space, as there tends to be much wasted space around counters.

Source:  http://id.berita.yahoo.com/teknologi/