Logging a user out of Twitter



I’m making an app that would run on a public kiosk. Users would stand in line and then log-in to our site, some of them using Twitter.

The problem with this setup is that when a user uses it after a person who has logged-in with Twitter, he will be logged-in as the previous user and have access to their account.

I can remind users to log out of my app, but I can’t remind them to log out of Twitter (and Facebook and LinkedIn…)

So: When a user logs out of my app, I want to automatically log them out of Twitter.

Is this possible? How?

Thanks for your help,
Ram Rachum.