Pass USER TOKEN when IFRAME occurs - by: frozo

Hi,

I have insert my Survey in my webpage with an Iframe. How can I get that the link works with an user token so he/she does not put the password.

The url survey in LIMESURVEY is: maiten.com/encuesta/index.php?r=survey/index&sid=78432&lang=es

The url survey of my webpage where I insert it with IFRAME is: maiten.com/encuesta-utilizacion-del-servicio

Is it possible to put the token following my link, something like this: maiten.com/encuesta-utilizacion-del-servicio{TOKEN}???

I need that when the user receive invitation email, may click on the url and recognize the token. Help me please!!!!