Mobile UIs Lecture #14 – April 28 th, : 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 electronic 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-and-drag metaphor –Text entry is difficult –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 Final Project Presentations starting Thursday! 15 mins + 5 mins for questions