If the user loggs in or you have user information, this means you have contact_key for that user. You can set contact_key in order to match user with the browser. There are two functions for getting and setting contact_key.


If user logged in set user id. This is important for identifying your users. You can put this function call in every page. It will not send unnecessary events.

dengage('setContactKey', userId);


If you need to get current user information from SDK use this function.

dengage('getContactKey', function(userId) {
     //use userId (contact_key) here