I want to know about the clients who use my web site are they already voted or not.
Like for a star Rating system. So what is the best technique to find this?
- Using Cookies?
- Using save the IP address?
- any other technique?
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Saving the IP in your database for every vote. – Pablo Matias Gomez Oct 07 '14 at 15:24
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1If they have unique logins then it's simple. You can't rely on an IP address as, for example, corporate firewalls will set them equal . – Bathsheba Oct 07 '14 at 15:30
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And, conversely, you can't rely on them because people have dynamic IPs. – Wooble Oct 07 '14 at 15:30
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[Hunting cheaters in a voting competition](http://stackoverflow.com/questions/2333054/hunting-cheaters-in-a-voting-competition?lq=1) – Alex K. Oct 07 '14 at 15:31
1 Answers
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The risks you run with each:
- Using Cookies - savvy users will clear their cookies and vote again (and again and again..)
- Saving the IP on the server - corporate visitors coming from a NAT'd address may be stymied as another coworker may have already voted from that IP address.
How important is it to avoid the fraud in option 1? If you have the means to "discount" excessive votes from a single IP address (i.e. cleanse vote records where total # from a given IP exceed some threshold), then cookies would be easiest and most widely accepted. Alternatively, you can use a combination of cookie and localStorage to further deter those who wish to over-vote.
Forty3
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