Get user token for end of survey link - by: teracomp

I would like to use the user's token to redirect them to a page that displays their computed results based on their responses.
When I tested this I saw the token passed as a parameter, but as soon as I started taking the survey, the parameter was no longer present. I suspect it's stored somewhere, but I don't know where or how to access it.

Is it possible to create a link at the end of the survey that goes to a page of my choice with the token as a parameter to allow me to reveal that respondent's results?

Is there a better method?