Fake Email Click Throughs

Issue: In comparing 20 Email campaigns sent, each with 5 clickable links, it is determined that the same exact recipients are opening and clicking through on each link in the email. What is the best way to determine which is a BOT click through and which is a human click through? We are thinking a human click through is 1 or 2 click throughs on an email with 5 or more clickable links. Thoughts?