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http://mandarapte.com/artanddesign/human-computer-interaction-notes-hci-gesture-technology-introduced-apple-2007-presented-steve-jobs-introducing-iphone-macworld-conference-expo-2007-keynote/
Human Computer Interaction Notes (HCI) of Gesture Technology that was Introduced by Apple in 2007, Presented by Steve Jobs himself while Introducing The iPhone in Macworld Conference & Expo 2007 Keynote