The new EU Regulation regarding the gathering of personal data (https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32016R0679) means we now have to add captcha to every public survey which collects nominative information.
Addin a captcha, regardless of how effective it is, will be mandatory for such surveys.
Can you provide details on what part of the legislation you believe requires CAPTCHA? I am admittedly not a lawyer; I did a scan of the English translation of the document and it seems to pertain to the processing and storage of personal information. CAPTCHA is concerned with ensuring that the data being submitted comes from a non-automated system, so it doesn't seem directly applicable.
Does anyone know if the issue about adding Captcha to Survey123 has been resolved? My government organization also requires that I add Captcha to my survey, as it is part of a Citizen Science project.
James Tedrick is right, it is more related to security against bots than anonimity.
Anyway we found a solution by asking our webmaster to add a captcha before displaying the Survey123 iFrame.
I don't see an existing Idea or Enhancement request for this. That being said, currently a CAPTCHA would be of limited use in that it would be able to protect the web page from loading automatically but would not protect the feature service submission endpoint, which can be reached outside of the Survey123 application. This is still a topic of research for the Survey123 team; if a solution to that issue can be found, it would make a CAPTHA implementation a viable enhancement.
This should be an absolute requirement. Public facing surveys for government use typically also have email notification embedded in the workflow and not having captcha or similar antibot prevents tainted data along with potentially compromising the organization’s emailing service.