Mobile UIs Professor: Tapan Parikh TA: Eun Kyoung Choe Lecture #10 - March 4th, : User Interface Design and Development

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

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

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

History

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

Source: The Simpsons, Lisa on Ice

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

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

Phone / Computer Convergence

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

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

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

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

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