[QUESTION] Looking for plugin for account linking

Hi Everyone,

Is there a plugin for Android and iOS which has the function to link Facebook - Twitter - Google+ (and maybe other) accounts?

In case it is not clear: my Application will require a login with one of the social medias, and I want to make an option for the users, that if they login with one account (eg: Facebook), they can link the app with their Twitter or other social account. So if the user logs in with a Facebook, links it with Twitter, logs out, and logs in with Twitter, the app would recognize that it is the same user. Saving into playerpref is not an option. The data is stored on a private server.