Barcodes with iOS

Acknowledgments

I am thankful to ...

Erica Sadun, who—four years ago at a developer conference in Seattle—put the notion into my head that someday I could be a book author too. When I got the opportunity to provide technical feedback for several of her books, I found that my commentary was both welcome and highly relevant. This has inspired my writing ever since.

Scott Meyers, for asking me on behalf of Manning if I would consider writing a book. He supported my idea of writing a “vertical book,” slicing through several different technologies, as opposed to writing a “horizontal book,” covering only a single technology. I could have chickened out at several points before we signed the book contract, but Scott’s trust in me—which was entirely ...