Relier Pairs Flash Cards Version en ligne Get ready for this card game par MARTIN EMILIANO CAMACHO GUERRERO 1 Person who uses the services of a professional or a company, especially one that does so regularly. 2 Piece of metal, generally round and with a relief on each side, to which a certain economic value is assigned and is used as a legal means of payment. 3 What is true and valid, what really counts 4 Another equivalent name is also used, the POS (Point of Sale Terminal). ... The POS Machine is an electronic type device with a screen and a keyboard. It is a technology that adapts to payments through debit and credit cards. 5 Establishment in which any type of consumer product is sold.