Mobile UIs

Professor: Tapan Parikh (parikh@berkeley.edu)TA: Eun Kyoung Choe (eunky@ischool.berkeley.edu)

Lecture #10 - March 4th, 2008

213: 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, AfricaFirst technology to be more rapidly adopted in

developing worldIPhone has become the #1 mobile data client

on Google

QuickTime™ and aBMP decompressor

are needed to see this picture.

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

QuickTime™ and aBMP decompressor

are needed to see this picture.

History

Apple Newton

Introduced in 1993, discontinued in 1998Design 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 1996Design 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 1999Design solutions:

– Full QWERTY Keyboard – Optimized for E-mail, Messaging– Dominance in the US business market

Adapted from Scott Klemmer

IPhone

Introduced in 2007Design 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 PlaformsMany are proprietary, closed and/or require licensing

–Symbian

–BREW

–Python

–XHMTL

–WAP

–GSM

–NET

–J2ME

–Android

–Qt

–Linux

–IPhone

Text Input Methods

Multi-tapT9 (dictionary-based)PredictiveSoft keys

Adapted from Maneesh Agarwala

Adapted from Maneesh Agarwala

Adapted from Maneesh Agarwala

Adapted from Maneesh Agarwala

For Next Time

Reading on User Interface ToolsInteractive Prototype / Final Project

Proposals are Due on Tuesday– Any questions?