1. Mobile UIs Professor: Tapan Parikh (parikh@berkeley.edu)parikh@berkeley.edu TA: Eun Kyoung Choe (eunky@ischool.berkeley.edu)eunky@ischool.berkeley.edu Lecture #10 - March 4th, 2008 213: User Interface Design and Development

2. Today’s Outline 1)The Future is Mobile 2)Trouble with Mobile UIs 3)History of Mobile UIs 4)Mobile Development Platforms

3. The Future is Mobile 1.5 billion mobile phones worldwide –~500M PC’s Exponential growth in China, India, Africa First technology to be more rapidly adopted in developing world IPhone has become the #1 mobile data client on Google Adapted from Maneesh Agarwala

4. The Trouble with Mobile UIs User Interface –Adapted point-and-click metaphor –Text entry is difficult –Limited use of other media –Limited attention Programming Model –Proprietary APIs and programming environments –Web-based applications require online connection

5. History

6. Apple Newton Introduced in 1993, discontinued in 1998 Design issues: –Text, shape recognition (error-prone) –Size (too large) –Connectivity (limited to synchronization, messaging) Adapted from Scott Klemmer

7. Source: The Simpsons, Lisa on Ice

8. Palm Pilot Introduced in 1996 Design solutions: –Human-aided recognition (Graffiti) –Pocket-size (Wooden block experiment) –Easy to sync (Single button operation) Adapted from Scott Klemmer

9. Nokia Adapted from Scott Klemmer Source: Scott Jenson, The Simplicity Shift. Cambridge University Press, 2002.

10. Phone / Computer Convergence

11. Blackberry (“Crackberry”) Introduced in 1999 Design solutions: –Full QWERTY Keyboard –Optimized for E-mail, Messaging –Dominance in the US business market Adapted from Scott Klemmer

12. IPhone Introduced in 2007 Design solutions: –Multi-touch screen (Zooming / Panning) –Soft keyboard (Predictive) –Dynamic layout (Portrait vs. Landscape) –Proximity sensor, Accelerometer –Integrate Mail, Music, Mobile Phone Adapted from Scott Klemmer

13. Development Plaforms Many are proprietary, closed and/or require licensing –Symbian –BREW –Python –XHMTL –WAP –GSM –NET –J2ME –Android –Qt –Linux –IPhone

14. Text Input Methods Multi-tap T9 (dictionary-based) Predictive Soft keys Adapted from Maneesh Agarwala

18. For Next Time Reading on User Interface Tools Interactive Prototype / Final Project Proposals are Due on Tuesday –Any questions?