During the one week sprint app design workshop for MSc Management of Information Systems and Digital Innovation course at LSE, I designed an app in a group of 6 that wins the 2nd price in the cohort. Object orientation and UML strategies were mainly used. The application integrates separate payments for event-based activities by embedding VISA billing information into QR codes associated with the event SmarTicket on phone. The project was judged by industry experts in software innovation from VISA, Roland Berger and Deloitte.