This may be the best mostly-empty book that you've ever owned This is one simple, straightforward, single place where you can store all your important login information and not risk losing all your valuable password information if it is stored on your computer and you suffer a computer failure. In addition to pages for your Internet logins and passwords, you'll find pages for your overall internet and wireless network information, space for cellphone and tablet logins, and commonly used customer service numbers for all the major internet providers.