iPhone and iPod touch users will be able to control their Blu-ray players using an application called BD Touch. The application will use the network capabilities of Blu-ray hardware and Apple’s handheld devices to transfer data.
According to NetBlender:
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The iPhone application will be able to interact directly with movies, showing extra information in the iPhone. It will also be able to keep a database of your movie collection. BD Touch will also be able to get digital copies of the movies inside the Blu-ray disc, presumably already encoded for iPod touch and iPhone playback.