I can log in a user through Kinvey and through Facebook individually but have not been able to merge the two users together. For example I already made an account with my e-mail and now wish to sync to either Facebook and/or Twitter with that account. So setting a Kinvey users Facebook/Twitter ID. What is the best way to do this?



Thank you!

Hi, can you go into a bit of detail about what you are trying to achieve? Kinvey allows you to log in using a social identity (Facebook/Twitter), but I'm not sure what you mean by "sync".

Right but if they have logged in with a username and password they already created how do i get that account to have the social identity information (Facebook,Twitter) so its the same one they log into when using their social identity.

Hi James, to add a social identity to a user, you can add the `_socialIdentity` property to your existing user object and then save it. The structure of the property is described in [this guide](http://devcenter.kinvey.com/rest/guides/users#usingsocialidentities).