POS machines when placed near customer area, especially when client pays on cash desk (like in fast food restaurants), are usually equipped with small display faced to client in order to show dish and payment details to him.
On customer side it is possible to put regular screen to show advertising additionally to order details. Such a displays fit R-Keeper 7 Second screen software that allows user interactive content to be shown.
Some FEC POS terminals could be purchased with second screen made of the same style as the rest of terminal body.
Regular two-line customer displays are supported by R-Keeper, Shelter and Game-Keeper package point of sale applications.