Pay2you Places is a new system of payment based on Smartphones geo-location functionalities and on virtual purse. It is characterized by the lightweight of its required equipment. We just need to install an application on the cellular of the client to assure the payment from start to finish. As for the trader only a registration on the service and a configuration of the electronic payment terminal are necessary to follow the settlement of the transaction. This innovative project helps to develop the use of mobile payment with existing equipment and by anticipating the improvement of Smartphones position accuracy. This paper aims at proposing solutions of safety and privacy for this system of geo-location payment.