Re: Unique User Hashes

On Wed, Feb 18, 2009 at 1:41 PM, tedd <tedd.sperling@gmail.com> wrote: > At 5:47 AM +0200 2/18/09, Ian wrote: >> >> Anyone had to deal with this in the past and does anyone have any >> suggestions/ideas as to how I could better this setup? >> >> Many thanks in advance, >> Ian > > Ian: > > As other people have said, using IP's are not really a good solution. > > If it was me, I would ask the user to submit their email address. Then my > script would send them an email with a token for them to click. After they > do that, they would be returned to my script and their email address would > be confirmed. > > With a confirmed email address, they can vote -- they get only one vote per > email address. > > Granted this is an involved method, but email addresses are unique and thus > ensures one vote per email address. E-mail addresses are (somewhat unique -- not getting into aliases, forwards, and such) e-mail delivery points, they are not a unique index of PEOPLE. You point out below that a single person can have multiple addresses. I also know several families where the entire family shares one address. > Now, this does not stop someone from getting several email address and > voting several times, but it does slow down mass voting and you have a > record of who voted. > > If you want to see how this works, try posting a comment on my web site > under any of the web tips (http://sperling.com). > > Cheers, > > tedd >