Newtons were a line of PDAs made by Apple. I owned quite a lot of them - started with MP100, upgraded to MP130, got MP2000 for some time. I really like design and user interface of those devices, it's a pity Apple decided to cancel whole like of products after very successful introduction of MP2100.

I managed to reverse engineer storage structure of newer Newtons, implemented "proof of concept" tool to decode Newton stores. I also created number of small tools which are (were) helpful during reverse engineering.

You can find lot more on my Hammering Newton site. Enjoy!