The diploma thesis presents a prototype of a mobile application whose purpose is to reduce the number of single-use payment cards and facilitate payments through a mobile device. By using such an application, event organizers can reduce the costs of purchasing payment cards, and users don't need to buy a card first to use it and avoid queuing to top it up. Everything is centralized within the application. The advantages of the application are as follows: reduced costs for organizers, a smaller ecological footprint, no costs for users, and easier topping up and payment processes.
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