I am creating a simple module of like/dislike. My site has no login system, which means the visitors are not the logged in members.. How can I log their LIKES/DISLIKES, so they can not repeat the same action again and again for same post? Can i log their unique IP or mac address.. any help?
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doumizhi0809 2015-06-26 14:21关注IP/MAC is not perfect as it will identify different users in the same household as one. Cookie is not perfect as they can easily be cleared (or the user can just use a private/incognito mode)
The best solution I've found - yet still not perfect - to identify users without a login is to use a long lived cookie/session as well as storing session ID, IP and User Agent along with the like/dislike ID to enforce any rule you would like to set.
From this answer, evercookie is also an option to explore.
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