Sense distance with Bare Conductive's Touch Board How can I sense distance with Bare Conductive's Touch Board, like they suggest in their product video?

I know how I can set the touch and release thresholds, so my Touch Board is more sensitive and triggers before I touch a sensor. What I want to do is get the information how near I am. Not in centimeters or so, but a simple value telling me when I'm nearer to or farther from the sensor like in the video.
As a member of the Bare Conductive team, I can tell you that looking at the grapher will be helpful to you. The grapher is a processing sketch that requires the Touch Board to be running the Datastream code. Datastream will give you the sort of raw electrode data that you're looking for.