Poll: How prevent duplicate votes?

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Author	Message
Francesc Febrer	Wednesday 11 February 2004 6:59:27 am Hi. I have a poll at my site open to everybody (anonymous users can vote it). For this, I set creat policy to anonymous user's group, but I want prevent duplicate votes (ie, sessions, cookie, etc). How can I do this?

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Wednesday 11 February 2004 6:59:27 am

Hi.

I have a poll at my site open to everybody (anonymous users can vote it). For this, I set creat policy to anonymous user's group, but I want prevent duplicate votes (ie, sessions, cookie, etc). How can I do this?