Loyal is a service that enables a seller to present his offers to an existing customer base whenever he has an offer. The service runs on mobile phones with MIDP1.1 or greater, PDA, laptop or just a pc connected to internet, by installing a specific software on customer’s device. The seller would get some benefits as : safer sales, lesser sales expanses, direct customer feedback, decreased inventory costs, direct advertising and quantifying the return of a sales campaign. As for the customer, the reasons for subscribing to Loyal service should be a mix of direct interests of staying informed on the latest available offers and benefits offered by the businesses as : gift tickets, coupons, or discounts. The business would offer the later benefits to its customers as a remuneration for the savings on printed commercials - such as catalogues and magazines aimed to customer mail box.