Reader Store accounts are now accessible from most web browsers, and sign-in and purchase can be done without having to install any software to a computer.
The focused sharing space keeps data both private and accessible offline, while free accounts limit the costs to the hub and a 2.5-inch hard drive, if it isn't already in the box.
Your best bet: Keeping an accessible list of your online user names, passwords and other prompts required to tap accounts you would want your family to see.