for the most part, it can't be done. If you use cookies to restrict, people can delete their cookies. If you restrict by IP address, people can go to another computer, and multiple people can't vote from the same computer. If you require authentication, people create multiple accounts
Now... if you charged $10 a vote... I suspect that few if any people would vote twice =) Unless getting their way was worth the money! restricting voting to "once per registered user" is really the best way, providing your account registration system requires email confirmation of accounts and you don't mind forcing people to register in order to vote. People can still vote more than once by creating multiple accounts with unique email addresses... but you can only build the wall so high - someone with enough time and interest will vote more than once if it's worthwhile to them. Rick ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Create robust enterprise, web RIAs. Upgrade & integrate Adobe Coldfusion MX7 with Flex 2 http://www.adobe.com/products/coldfusion/flex2/?sdid=RVJP Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:278997 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
