Prevent Unauthenticated Users to vote like multiple times in ASP.Net

Last Reply on Jan 27, 2014 02:51 AM By Mudassar

Posted on Jan 26, 2014 06:15 AM

How can we prevent non ahuthenticated users from like and dislike multiple times?
one way : save Ip address in a cookie
but theres's two problem
1. I heard Ip address isn't unique and changes frequently
2. cookie can be deleted by user
I'd like know what's your suggestion and what's the common method for it?

thanks a lot

Posted on Jan 26, 2014 10:10 AM

Cookie is the best way, generally no one will clear cookies just to do false likes as it will also delete other cookies from browser.

But if you still have a problem with it, don't allow any one to like without login.

That's the only way

Posted on Jan 27, 2014 02:51 AM

I donot agree with @Azim, MAC Address is only available through LAN on internet it is not available.