UniPag: um modelo de pagamento móvel voltado ao comércio ubíquo

Abstract

The use of mobile devices as a payment device has been growing over the last few years. Although some deployments of digital wallets have been successful, there is still no standard to be used by market. This work aims to present a solution for mobile payment through the use of a digital wallet. This solution must be heterogeneous, being made available to the largest possible number of mobile devices such as mobile phones and tablets, and should allow payment between two users without internet connection. The solution also considers the context information of the user, and seeks to offer a different solution to the end user through the application interface with a server application to be installed on the premises. Safety is also an important item, and the model should provide for the use of a secure element, ensuring the security of information stored on the device. We developed a prototype of the proposed architecture, called Unipag. The prototype was developed by evaluating four different solutions digital wallet, two academic solutions and two commercial solutions. The prototype was initially developed for the Android system, and were assessed twice. The evaluation scenarios demonstrated the successful use of the application for daily payment scenarios. The usability evaluation demonstrated that the application is easy to use, and 96% of users would use the application if available. The results encourage the study and demonstrate the feasibility of the solution.