MacRumors.com

One reader (johnpg) notes a previously unadvertised feature of Panther which was detailed on Apple's Mac OS X mobility page called "Home on iPod". (the description has since been removed)

Home away from home

Ever thought you could carry your home in the palm of your hands or in your pocket? You can. Panther's Home on iPod feature lets you store your home directory - files, folders, apps - on your iPod (or any FireWire hard drive) and take it with you wherever you go. When you find yourself near a Panther-equipped Mac, just plug in the iPod, log in, and you're "home," no matter where you happen to be. And when you return to your home computer, you can synchronize any changes you've made to your files by using File Sync, which automatically updates offline changes to your home directory.

While this feature is reportedly not in the latest version of Panther (build 7B85), it was first mentioned in this eWeek article in April which provided some of the first hints of Panther. According to eWeek's sources at that time, "one proposed feature will let users take home directories they've saved on peripherals and networks and use them for file access or securely log into a Mac running Panther."