What is the structure of resistors that gives them their resistive properties? Do you know of any materials that are thin, flat, stiff, durable, and have consistent resistive properties? I’d like to be able to measure distances on such a piece of material about 2 feet by 2 feet as a function of resistance applied to 3-5 volts. So, the amount of resistance that the material offered would have to vary consistently as a function of distance from a point on the material where electricity would be connected. I’d also like to be able to represent hypothetical land formations on a game board using this material. So, the material might have to be transparent or mesh-like – so that the appearance of the game board design could be seen through the material. Do you know if there is a conductive paint that would allow electricity to flow from the material through the paint and into game pieces that I would like to use on the game board? The position each game piece could then be calculated, I think, as a function of the voltage drop between three points where electricity is connected to the material and the location of each game piece on the material.