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Preventing Multiple voting without using Ip addresses

P: 1
I am trying to build aan opinion polling system in an environment where the net is not available. How can I prevent multiple voting using the student Ids. Many students can vote from one computer.
Feb 14 '08 #1
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3 Replies


harshmaul
Expert 100+
P: 490
Make the students log in before they can place a vote. and when you record the vote, record the student ID, and then don't allow that ID to vote again.
Feb 14 '08 #2

100+
P: 110
actually, you don't even need a login, just get the student ID when you get the vote and store the studentID as 'used'.
Feb 15 '08 #3

harshmaul
Expert 100+
P: 490
That is true. However... If the ID's are guessable people can log many votes or whaterver by guessing others userIDs.

I think we have ascertained the solution tho, you need to log userIDs, whether behind a login page or not :)
Feb 15 '08 #4

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