The iPhone was invented by a team at Apple Inc. under the leadership of then- CEO Steve Jobs. The project began officially around 2004 as "Project Purple," with key contributions from hardware engineer Tony Fadell, software engineer Scott Forstall, and design chief Sir Jonathan Ive. Steve Jobs steered the development away from a tablet focus toward a touchscreen smartphone, which was unveiled by Jobs at Macworld in January 2007 and released later that year. The iPhone incorporated revolutionary multi-touch technology and was a major breakthrough in smartphone design and functionality.