Guest Book
What people have said about the book:
This book not only serves as a great reference for competent developers, but also acts as a great training guide for developers getting started with the Blackberry platform. Has saved me a fortune in staff training costs!! All different areas and approaches of the Blackberry infrastructure are covered and no stones are left unturned. David Pickering |
Inside the Book Errata Chapter 7 - Web Signals
| Chapter 7 - Web Signals |
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I was having an email discussion this morning with Ronen Halevy, Editor in Chief of www.BerryReview.com and he suggested that the content in chapter 7 was incorrect: BTW some small things are wrong like in Websignals docs you say it is a good idea to use the email address as a PUID but it is actually a bad idea. If somebody registers and then unsubscribes they will not be able to subscribe again with the same PUID. So what I did was add a random 5 digit number to the Email address which is what RIM recommends. In the book, I suggested using email address because it was guaranteed to be a unique identifier for the subscriber but apparently I didn't take into account what would happen when the user unsubscribes then tries to subscribe again. It's likely (I haven't tested it) that RIM will keep the old ID and not let it be used again as Ronen suggests. |