Treballs Finals de Grau d'Enginyeria Informàtica, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2017, Director: Guillermo Blasco Jiménez, Guillem Palomar i Pablo MartínezInternet is one of the biggest inventions of the human kind, from its beginning it has moved forward in many directions until it has grown into something quite unmanageable. Initially it was just for a very few because devices that had network access were not available for the vast majority. This starts changing and becoming popular with time, until reaching the point that nowadays pretty much everyone has several devices from which to access the Internet, each of these with different features. For this exact reason, Slash and Pair is born, a web application committed to unify the strengths between the most used devices, such as computers and smartphones. A computer has a large screen which is handier when viewing content and a smartphone has a series of sensors such as gyroscope or touch screen that make the access more agile. Slash and Pair pairs these two devices by sending sensor data from one to another in order to create a new usability concept. To achieve this, a study of quality standards and architectural patterns has been carried out. The project is divided in two parts, dedicated to the mobile performance and another to the computer operation. Throughout the document the whole development of the mobile part and an analysis of the system architecture is shown concluding in a software that achieves its purpose of matching and accomplishes the interaction between devices.