How to detect how many times a user has visited a page

I'm trying to code a website that can detect if a user has visited a link again.

I've tried to use cookies & sessions to detect but its worthless as soon as the client deletes his browser history!

I've tried to store the ip address with its latitude and longitude but some users can change the ip!

Is there any method else? My website will pay to users so if I can't detect the frequent visits to a page, users can earn more illegally!