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Ensuring one vote per person


I have built a rating server control. Whats the best way to ensure one vote
per person? Check IP Addresses and allow 1 vote per IP address or via
cookies?

Thanks
Ashok

Jul 17 '06 #1
6 1914
Hello Showjumper" dfgkjhdf,

IP Address doesn't work because of proxy servers. I have to say that e-mail
address is the only way I can imagine it workign well.
Thanks,
Shawn Wildermuth
Speaker, Author and C# MVP
http://adoguy.com
I have built a rating server control. Whats the best way to ensure one
vote per person? Check IP Addresses and allow 1 vote per IP address or
via cookies?

Thanks
Ashok

Jul 17 '06 #2
IP addresses cannot be relied upon to be unique because of proxy server &
such.
The only reasonable way to be sure is to create an authentication system.
People sign up, get a user name and password, then they log in and vote.

--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://SteveOrr.net
"Showjumper" <dfgkjhdfwrote in message
news:Og**************@TK2MSFTNGP05.phx.gbl...
>
I have built a rating server control. Whats the best way to ensure one
vote per person? Check IP Addresses and allow 1 vote per IP address or via
cookies?

Thanks
Ashok


Jul 17 '06 #3

Okay Thanks Shawn and Steve
"Steve C. Orr [MVP, MCSD]" <St***@Orr.netwrote in message
news:Oo**************@TK2MSFTNGP03.phx.gbl...
>
IP addresses cannot be relied upon to be unique because of proxy server &
such.
The only reasonable way to be sure is to create an authentication system.
People sign up, get a user name and password, then they log in and vote.

--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://SteveOrr.net
"Showjumper" <dfgkjhdfwrote in message
news:Og**************@TK2MSFTNGP05.phx.gbl...
>>
I have built a rating server control. Whats the best way to ensure one
vote per person? Check IP Addresses and allow 1 vote per IP address or
via cookies?

Thanks
Ashok





Jul 17 '06 #4

How is MSDN handling it? At the end of the articles, one can vote and if you
try to vote twice a popup appears.
"Steve C. Orr [MVP, MCSD]" <St***@Orr.netwrote in message
news:Oo**************@TK2MSFTNGP03.phx.gbl...
>
IP addresses cannot be relied upon to be unique because of proxy server &
such.
The only reasonable way to be sure is to create an authentication system.
People sign up, get a user name and password, then they log in and vote.

--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://SteveOrr.net
"Showjumper" <dfgkjhdfwrote in message
news:Og**************@TK2MSFTNGP05.phx.gbl...
>>
I have built a rating server control. Whats the best way to ensure one
vote per person? Check IP Addresses and allow 1 vote per IP address or
via cookies?

Thanks
Ashok





Jul 17 '06 #5
Pretty sure they are just setting a cookie to do that.

Showjumper wrote:
>
How is MSDN handling it? At the end of the articles, one can vote and if you
try to vote twice a popup appears.
"Steve C. Orr [MVP, MCSD]" <St***@Orr.netwrote in message
news:Oo**************@TK2MSFTNGP03.phx.gbl...
>IP addresses cannot be relied upon to be unique because of proxy server &
such.
The only reasonable way to be sure is to create an authentication system.
People sign up, get a user name and password, then they log in and vote.

--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://SteveOrr.net
"Showjumper" <dfgkjhdfwrote in message
news:Og**************@TK2MSFTNGP05.phx.gbl...
>>I have built a rating server control. Whats the best way to ensure one
vote per person? Check IP Addresses and allow 1 vote per IP address or
via cookies?

Thanks
Ashok




Jul 17 '06 #6
Some sites pass a cookie once you vote. Of course if you erase the cookie,
you could vote again so it isn't reliable.

"Showjumper" <dfgkjhdfwrote in message
news:%2****************@TK2MSFTNGP03.phx.gbl...
>
How is MSDN handling it? At the end of the articles, one can vote and if
you try to vote twice a popup appears.
"Steve C. Orr [MVP, MCSD]" <St***@Orr.netwrote in message
news:Oo**************@TK2MSFTNGP03.phx.gbl...
>>
IP addresses cannot be relied upon to be unique because of proxy server &
such.
The only reasonable way to be sure is to create an authentication system.
People sign up, get a user name and password, then they log in and vote.

--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://SteveOrr.net
"Showjumper" <dfgkjhdfwrote in message
news:Og**************@TK2MSFTNGP05.phx.gbl...
>>>
I have built a rating server control. Whats the best way to ensure one
vote per person? Check IP Addresses and allow 1 vote per IP address or
via cookies?

Thanks
Ashok






Jul 17 '06 #7

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