Ian wrote:
I am busy building an application that requires one time voting and to get
around the user deleting a cookie that I set im keeping a hash on my side
which I then try match before allowing anything.

I assume this is backed by a db of some sort.

$query = "update user set has_voted=NOW() where userid='x'";

so you can also see when the user voted. Maybe record the ip etc as a record to back up your assertion they have voted but as you say, ip is not a very reliable indicator.

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