After two years of tinkering and experimenting Swiss freeskier Nicolas Vuignier just shared a video of what he calls a centriphone, a device that works like a sling to hurl his iPhone 6 through the air while he skis down a mountain. Played back in slow motion the footage is incredible as Vuignie
Source: Centriphone: A Skier Uses an iPhone and Sling to Film Dramatic 360° Footage of Himself While Skiing | Colossal