The first section I turn to whenever I pick up a technical book is the Acknowledgments. This section tells you who the real heroes behind the scenes are. Though only my name appears on the cover, it is actually the collective efforts of many people that have made this book possible.

First and foremost, I want to express a heartfelt thank you to my editor, Brian Jepson. Brian has been instrumental in designing the Unwired series and making sure that the book you are holding in your hands is useful to you in your journey through the wireless world. Without Brian's help, this book would never have been possible. He has served both as an editor as well as an expert technical reviewer, raising questions that made me think deeper. Brian also contributed several sections to this book, covering areas that were just too much for me. For these, I am forever indebted to you, Brian. Thanks!

I am also grateful to John Osborn, who had the faith to sign me up with O'Reilly. Thanks, John! Thanks also to the many wonderful folks that I met at the O'Reilly Cambridge office when I was in the States in 2002.

This book covers a lot of products from many vendors. There is no way that I could own all these products, and was lent several for review purposes. For this, I would like to express my gratitude to the following people and companies for their generosity:

  • Mr. Goh Joon Tai from EastRep Pte Ltd, for loaning me the Bluetake Bluetooth equipment.

  • Mr. George Wong from D-Link International Pte Ltd, for loaning me the D-Link wireless access points, cards, and adapters.

  • Ms. Jaylyn Tey and Ms. Janice Chew from ViewSonic Singapore Pte Ltd, for loaning me the ViewSonic AirPanel V150.

  • Vera Lam and John Cheong of Space Machine, Inc., for loaning me the Pocket Map GPS.

  • J. Abra Degbor of Verizon Wireless, for loaning me the Sierra Wireless Aircard 555 1xRTT wireless card.

  • Suzanne Lammers and Amy Schiska of Sprint, for loaning me a PCS Vision card for their 1xRTT network.

  • Ms. Jasmine Yong from Sony Ericsson Mobile Communications International AB, for loaning the T610 and the HBH-60 headset.

Thanks also to the various vendors who have kindly given me the permission to use the images of their products in this book.

Last, but not least, I would like to thank my family for their continuous support and understanding as I worked late into the nights.