[thelist] Looking for a poll

[Hansen, Grant]

How about recording the IP address of the user in an array or DB and only
allow one vote per IP address?  The only problem I can see is that users who
access the web page through the same firewall may all appear to have the
same IP address.  It depends who your target is I guess.

Grant Hansen 
Computer Systems Officer - B. Info. Tech, AD. Elec. Eng, MCP
Department of Primary Industries Fisheries
Floor 2, 80 Ann St, Brisbane, Australia 4000
mailto: hansengo at dpi.qld.gov.au
PH: 07 3239 0701 - Fax:(07) 3224 2805

> -----Original Message-----
> From:	Niklaus Haldimann [SMTP:runciter at rosa.com]
> Sent:	Tuesday, July 31, 2001 5:57 PM
> To:	thelist at lists.evolt.org
> Subject:	Re: [thelist] Looking for a poll
> 
> "Luther, Ron" wrote:
> > I'm thinking the best you can do is have them log into some section of
> your
> > site and get one vote per login account ... but that ain't zactly the
> same
> > as one vote per person.
> 
> I am right now about to code a voting application for a site. Users must
> enter their email to cast a vote. The email along with a randomly
> generated key are stored in a db. The user will then recieve an email
> with a link, that passes their random key to a script. Only if they have
> visited the link, the vote will be counted. Votes from the same email
> address will not be accepted the same day again (on this particular site
> users can cast one vote a day). Of course users can still use different
> mail accounts, but I hope this system will prevent large scale abuse.
> IMHO this is easier to code and handle than a full-blown user login
> application. I can still think of a way to crack it with an automated
> script though, but only an experienced programmer can do it and I'm not
> gonna tell ya. ;-)
> 
> On another site I was working on we used cookies to prevent multiple
> votes per person. Because everyone can turn off cookies we built the
> application to work only with cookies turned on. Nevertheless someone
> set up a perl script to cast several 1000 automated votes an hour -
> accepting cookies can be mimicked as well as basically any other browser
> behaviour.
> 
> Cheers,
> N.
> 
> --
> Niklaus Haldimann, Frontend Engineer
> At Work: http://www.rosa.com
> At Play: http://www.ubique.ch
> --
> log-power to the WAP-people: http://www.waplog.ch
> 
> 
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