Abstract: The invention relates to a system comprising: a server (1) in communication with a plurality of point-of-sale (POS) terminals (2), point-of-sale (POS) terminals (2) arranged to communicate wireless with a consumer device (3); and a logic (4) stored on the costumer device (3) arranged to; identify a point-of-sale (POS), enable check in of a virtual shopping cart (5) enabling shopping at said point-of-sale (POS) and enable check-out for payment at said point-of-sale (POS), logic (6) stored on the POS terminal (2) arranged enable communication with said costumer device (3), wherein said logics (4, 6) are arranged to enable said POS terminal (2) to complete the sale of merchandise (7) contained in said virtual shopping cart (5), and to produce a physical receipt and/or an electronic receipt (8), wherein said server (1) is also in communication with a plurality of point-of-sale (POS) terminals (2) and said virtual shopping cart (5) is handled by said server (1).