If you let someone use your computer, they could gain access to your saved passwords, read your email, access all your files, and more. Instead of looking over their should, just use your operating system’s guest account feature.

Guest accounts are found on all desktop operating system — from Windows and Mac to Ubuntu, Chrome OS, and other Linux distributions. The Guest account isn’t enabled by default on Windows, so you have to go out of your way to use it.

We’ve covered why it’s a good idea to use separate Windows user accounts, and using a guest account is ideal for the same reason. There’s no need to create a dedicated user account for temporary guest users.

via How-To Geek http://www.howtogeek.com/170269/how-to-let-someone-else-use-your-computer-without-giving-them-access-to-all-your-stuff/