Never figured out how to properly use these. I just find it very akward to put my tongue that close to my keyboard.
Just hold it in one position and wait for the orgasm to cross the screen.
I used to have a friend that did R&D at IBM back in the day. Apparently there was a double nubbin version that they considered at one point.
I never actually asked. We just made nipple jokes for 5 minutes.
If I were to guess, it was either a left and right side thing for left and right handed people, or a dual stick for 3 axis control.
Lefty here, the position of the nipple between the GHB keys is pretty convenient to reach with the left hand as well. I do know they made some mice that had a nipple instead of a scroll wheel which would allow for two-axis scrolling, so perhaps you’d assign one for document scrolling and one for cursor control.
I came so hard when you firmly pressed my clit on one side for a little while