In iRacing Account Management you can find a list of Connected Applications. This is a list of applications that have active login sessions for your iRacing account. In the image below, this account has active sessions for the Account Management app itself, the iRacing UI (listed as simply iRacing), and our mobile app, iRacing Companion.
Members will also see an entry for Easy Anti-Cheat if they have been in a session recently. The Easy Anti-Cheat entries are created automatically by iRacing when the simulation launches. Removing them may prevent you from being able to re-enter a session if you disconnect from it before it is over.
Any of the Connected Applications can be logged out and disconnected from the account by using the from the Remove option. When this is done, all active sessions for the account that are associated with that application will be logged out. Further use of that application will require the login process to be completed again.
Clicking on the Details button will display additional details about the application, such as contact information and individual session which can be logged out using the Log Out button.