TRUE to say, the product sales of any business are based on the quality of the product, as well as the way of marketing. Advertising plays a major role in marketing. Good advertising doesn't necessarily need a Big B, but a different approach to advertising products in public is a brilliant idea. We now present to you a marketing technique that is as advanced as traditional marketing techniques. Advertising on mobile devices is a significant advancement in traditional advertising methods. People carry their mobile device with them most of the day, rarely lend it, and don't share a device with other people, like a TV or landline for the whole family, so mobile advertising can reach people almost anytime and anywhere. Here we will discuss the particular potentials and challenges of mobile advertising and present the MoMa system as an approach to enable personalized and contextual advertising while ensuring data protection, while context is not limited to the simple location of spam.Keywords: Mobile Business, mobile advertising, contextual mobile applications, data protection.1. IntroductionMarketing includes all activities related to acquiring and maintaining markets for a company's products and services. These activities include distribution, product planning and pricing policy and communication. The most common form of the latter is advertising. Advertising is again defined as the non-personal presentation of ideas, products and services, whereas the identifiable medium of paper... advertising, the advertiser must therefore pay for the transport of the data. The mentioned characteristics and challenges of mobile advertising reveal an area of ​​conflict: personalized advertising requires sensitive information about the end user2. The MoMa2.1 system. OverviewThe basic principle of the MoMa system is illustrated in the figure: end users create orders according to a given catalog, a hierarchical set of possible product and service offerings that are described by appropriate attributes: at the level higher, we might have 'gastronomy' for example, which could encompass categories such as 'pubs', 'restaurants' or 'catering services'. Each category is specified by certain attributes, in the example of gastronomy this could be “price level” and “style”. When creating an order, the client application will automatically populate the appropriate context parameters.