Back in 2003 Apple touted a feature called “Home on iPod” being petr of the then up-coming OS X Panther that would have supposedly allowed one to carry one’s home directory around on an iPod and mount it on any system one could authenticate against.

It was pulled before it was released, however, and never heard from again. As far as I know, no justification was ever given.

https://www.macrumors.com/2003/10/08/pulled-panther-feature-...