I have a simple vote up and vote down feature, which on clicking calls a js function and increments or decrements the counter variable accordingly.
But i have an issue, some malicious script just executing the script to incrment the counter by vote up.
I am not allowed to use the captcha here for validation nor i can use the cookies and cant block the IP also after voting once.
Can I have something simple solution than it.
I hav the feeling that there can be something really simple than all the methods above, but cant think of it precisly..