The SparkFun Bare Conductive Paint Wall uses the Bare Conductive Touch Board (https://www.sparkfun.com/products/13298), Bare Conductive Paint (https://www.sparkfun.com/products/10994), Copper Tape (https://www.sparkfun.com/products/10561) and is powered via USB (https://www.sparkfun.com/products/10215).