I explain my mind.
I have a website with is own authentication service. The user can answer a survey using external link or with iFrame integration. From the administration tool of my website I would like to see the answer for each of my user.
In my website I have a user's ID for example equal to '123456' and different in limesurvey database.
With this user's ID and the survey ID I would like to get the answer of the survey in pdf to display it in my website.
I hope you understand what I want to do.
How to make this link ?
Depending on your webstack you need to decide with what kind of programming language you want access the API of LimeSurvey. Lot of work unrelated to LimeSurvey itself. You need to have a concept to see if the API is allowing the things you want to do.
I would be surprised if someone will provide you step-by-step instructions for this. But let's see what others have to say.
When I read the API doc I see I can create a session but how to put it in the URL when I create the link. There is something obscur in my mind. The other things seems to be ok.