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I want to set up a voting system which doesn’t require people to log in, but they can vote as they want.
How do i stop people from spamming on voting (sending request to add the vote)? i know using client site scripting can easily stop it (from proper user), but what about server side (PHP). i don’t want people to have that url and constantly hit it to increase the number.
Cheers
Implement reCAPTCHA – it’s super easy to implement (takes maybe 10 minutes), is a good anti-spam measure, and serves a greater purpose (digitising books).
If you really want to go with cookies, have a look into evercookies. They’re super-invasive, and very unethical, but hey, it’s your site 🙂