The question is, what will be considered an acceptable way to implement this in Unity3D?
the email leads to this site: http://www.cookiechoices.org/
however there the explanation is a bit vague - we are supposed to display a message like so:
However, information about the “see details” is vague - like, what If I use several ads - do I link to them all? I wish there was a finished app where I could see an example implementation
Just flash up a UI panel with the appropriate privacy policy text at the start. Player must tick a box saying “I have read and consent”. It should also include a link to your website with a full privacy policy.
As a consumer I personally hate this ruling. Its so annoying to constantly acknowledge privacy policies.
Get one. There are plenty of free hosts around. I am frankly surprised you can even submit an app to the store without a website with a privacy policy. Its pretty much the law in every country that can afford internet access.
If you are really strapped for a website, a link to a google doc will be sufficient. It just needs to be accessible.
Edit: Actually I just taught myself web development. For a small fee I can build a website for you.