It seems it is possible to synchronise your iPhone to more than one computer at a time, thus negating the need to erase all data if you are often moving your phone around, maybe using a work and home PC etc.

The process involves changing the Library Persistent ID so that both iTunes copies believe they are in fact running from the same library. You’ll need to get down and dirty, hacking the library.itl file using  hex editor, but as long as you take a back up, there will be no danger involved and I found the process quite enjoyable.

Full details can be found over at ismashphone.com

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