Ryan Leslie, a Grammy-nominated rap and hip-hop artist, created SuperPhone, a platform that enables personal connections with an audience. He was recognized as a "DOER" at SIGNAL London's annual conference for developers, who have changed the world with a text editor. Ryan has personally replied to over 50,000 of his fans since creating SuperPhone, transforming his life and career. He will be joining SIGNAL London on September 20th, 2016, to share more with the developer community, using code BLOG50 for £50 off the ticket price.