Jack Dorsey days, Dorsey worked occasionally as a fashion model. By age fourteen, Dorsey had become interested in dispatch routing. Some of the open-source software he created in the area of dispatch logistics is still used by many taxi cab companies. Dorsey attended the University of Missouri–Rolla for two-plus years (1995–1997) before transferring to New York University, but he dropped out in 1999, one semester short of graduating. He first came up with the idea that he developed as Twitter while studying at New York University. While working on dispatching as a programmer, Dorsey moved to California. In 2000, Dorsey started his
DeDe Dorsey and offense in successive seasons. In less than three seasons as a defensive player, Dorsey had seven career interceptions, returning four for touchdowns, and blocked seven field goals and nine punts. Dorsey signed with the Cincinnati Bengals as an undrafted free agent following the 2006 NFL Draft. He was waived prior to the start of the 2006 season. Dorsey was claimed off waivers by the Indianapolis Colts on September 3, 2006. He played in Super Bowl XLI for the Colts, helping them win, 29–17, against the Chicago Bears. The Colts waived Dorsey on September 1, 2007. On September 25, 2007,