Our sister publication, Macworld, kicks off their coverage of the Macworld Expo in San Francisco by looking at some iPhone accessories. Dan Frakes shows a case with a built-in credit card reader, an app that lets you create music playlists depending on your mood, and talks with a company that lets you upload your own pictures or artwork to decorate a customized case.

This story, "Macworld Expo Gems: iPhone Credit Card Reader; Personalized Cases and Apps " was originally published by Macworld.

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