It is touch sensitive and will produce an electrical signal no matter where you press on it.
Step 1: How It Works
Ideally, this robot skin could be 3d printed. With a more intricate pattern, the feel and resiliency of human skin could probably be achieved. Unfortunately, 3d silicone printing is beyond the reach of my limited budget, and as far as I know, no one so far is 3d printing conductive rubber.
Oogoo II-A Conductive Rubber
You can make your own conductive rubber from silicone caulk, corn starch, solvent, and graphite powder. This creates a silicone rubber which can be made thin enough to paint on or thick enough to cast into molds.
Oogoo II can be cast into sheets and then laminated to create a layered robot skin that conducts electricity when under pressure. The layers are designed to conduct between two layers, no matter where you press on the surface of the skin.
Step 2: Materials
Corn starch from grocery store
Carbon Graphite powder- Available from: http://www.elementalscientific.net/
Naphtha solvent from hardware store. Turpentine or Citrus solvent can also be used but they take longer for the fumes to dissipate.
1/32" and 1/16 inch thick plastic sheets