Sorry for so late respond. Somehow missed your message. FAQ should be available now with new name link. Still few more days needed to make everything nice in www.viomba.com
About testers:Targeting a right tester group will help. Also eyes are a bit different than e.g mouse. Eyes moves often unintentionally.
If you will be interested you can try our demo and see how it works
Also, isn't it a problem that the testers are likely not motivated in any way similar to potential customers?