The data stored for each vote are described in API.txt, including
vote_source -- A unique identifier used to distinguish votes cast by anonymous users. By default, this is the IP address of the remote machine.
I think that further documentation is needed to explain how to override this default.
Many sites have a policy against logging IP addresses, so they will need some other method for identifying anonymous users.
For now, treat this as a documentation issue. It is possible to override the default, and we just need to explain how.
It might be worth making code changes so that it is easier for site builders to change how votes are tracked.
In the comments below, I will provide draft documentation. Should this be added to API.txt or README.txt or somewhere else?
None (assuming that this stays a documentation issue).
None (assuming that this stays a documentation issue).
None.
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