Marriott is testing a mobile app developed by MIT’s Mobile Experience Lab that includes physical lobby features like a large interactive digital screen and an LED table that interacts with the people sitting down at it. Marriott sees it as a way to improve guest experience at its 500 locations worldwide by getting them to talk amongst themselves in real time. Said Paul Cahill, Marriott’s SVP of brand management, “The idea is, how do we bring social media into this public space and make it easier?”