Your iPhone saves all of your settings and data in your user account, called the "Apple ID." You may want to change user accounts on your iPhone for a number of reasons; for example, you might want to ...

On occasion, you may want to allow other people in your home to access your Mac, but not your personal account. We'll show you how to set up and manage temporary guest users. If you are routinely ...

In Windows XP Home Edition, there are two basic types of local user accounts (in addition to the guest account): administrators and limited users. With XP Pro, things get a bit more complicated. Users ...