Ways of determining AIDA (action, desire, interest) on landing page?

[dmitry12345]

Hey,

I know a guy named Jacky (RIP) made a tracker called ClickerVolt that tracks the AIDA on a landing page but I can't seem to pin point exactly how and where these values are calculated.

I know one of them is % of page scrolled, and I believe the other is based on the amount of time spent on the page.