How are views counted on dribbble.com?

Question

Adobe

Binding by ip - no, I went under different ones.
Session binding - no, different ip and sat through the browser in the anom. mode (closing it all the data disappears.)
js seems to be the same, not something like that. So how did they do it?
If on YouTube views are counted by time (you need to view more than 30 seconds), then how is it?

Answer 1

timing + ip