still confusing and cryptic. But here's something to think about: Just because you don't believe in Captcha, doesn't mean robots don't exist.

Also, as i said before, with token authentication, URL parameter passing doesn't work. The reason it doesn't work is for the same reason that it doesn't work when there is a captcha or an introduction page between the URL send and the actual survey form loading.

potvorko,

1. Please add your findings at www.limesurvey.org/manual/Workarounds:_S...using_the_survey_URL so other benefit from your solution as well.

2. Furthermore, please also create a bug report and post the link here afterwards so we can try to fix the captcha issue.

3. From my exprience with > 100 Limesurvey projects each year you don't really need captchas. So far I have never seen any robot filling out a survey. They are not that clever.