I'm planning to build an Iphone/Android app for users to logout from any active sessions of Gmail, Facebook etc remotely. I know this feature is available in Gmail and Facebook, but I want users to use an app to signout from their accounts which they might have accidently left logged in in a shared computer or anywhere else. I appreciate none of these services provide an open API to do this, but I want to look into ways of implementing this. Please note that the app is only going to send a request to Gmail, Facebook etc to log out from any sessions and the actual work is done by the respective service i.e gmal, facebook. A simple UI that shows each application name and the option to signout from running sessions against it would do. Nothing fancy at all. I would be pleased if you can get back to me if this is doable from your end and if so the estimated time for development.
Thanks very much,