This feature keeps track of all the user sessions for a particular account. Active sessions for the past 7 days are listed in the sessions screen (including the current session) with additional information like Start Time, IP Address, etc. Users have the option to end individual sessions or end all sessions (excluding the current one). 
For example, you have logged in to a service from your home and for some reason have forgotten to sign out. Your session remains active and when you reach office, you realized that the previous session was not closed. In such instances, Accounts User sessions helps you to check all active sessions and close the sessions. It also helps you to identify any unauthorized access to your accounts by checking session details such as Started time, Connected From IP Address and Action.

To view user sessions

1. Click on your login name and then click My Account. 
   
2. In the User Sessions page, you can view the list of sessions and its details.
3. In the Authorized websites page, you can view the websites that have been authorized.
4. Click Close to close the specific session, or Close All Other Sessions to close all sessions (other than Current Session).