About the Technical Reviewers

Yosun Chang has been creating apps for iOS and Android since early 2009, and is currently working on a next generation 3D and augmented reality mobile games startup called nusoy. Prior to that, since 1999 she did web development on the LAMP stack and Flash. She has also spoken at several virtual world, theater, and augmented reality conferences under her artist name of Ina Centaur. She has a graduate level background in physics and philosophy from UC San Diego and UC Berkeley. An avid reader who learned much of her coding chops from technical books like the current volume, she has taken care to read every single word of the chapters she reviewed — and vet the source. Contact her @yosunchang on Twitter.

Tony Hillerson is a software architect atEffectiveUI. He graduated from Ambassador University with a B.A. in Management Information Systems. On any given day, Tony might be working with Android, Rails, Objective-C, Java, Flex, or shell scripts. He has been interested in developing for Android since the early betas. Hillerson has created Android screencasts, has spoken about Android at conferences, and has served as technical reviewer on Android books. He also sometimes gets to write Android code. He is interested in all levels of usability and experience design, from the database to the server to the glass. In his free time, Hillerson enjoys playing the bass, playing World of Warcraft, and making electronic music. Tony lives outside Denver, Colorado, with his wife and two sons.