The customer usage scenarios are as follows.

1. A public PC with webex app installed.

2. This PC is always on and will not shut down.

3. When a user uses the webex app, he forgets to sign out.

4. When the next user continues to use the webex app on this PC, he will see the chat history of the previous user because webex has not signed out.

5. The customer hopes to add an option to sign out the webex app in addition to manually clicking the sign out option.
For example, when you click the X button in the upper right corner, you will be prompted whether to sign out webex app. Or use changes on the registry to automatically sign out the webex app.