What if everything could be made into an interface? What if instead of being limited to stroking handheld plastic rectangles, any physical surface – a wall, piece of fabric, tabletop or piece of paper- could be interactive? Better yet, what if you could conceal this interactivity or hide it in plain sight? This workshop will teach you how to activate surfaces in this way, leading you through the process of designing and making a digital musical instrument. In this hands-on workshop, we’ll introduce you to electrically conductive paint and its technical characteristics. We’ll also show you how it can be applied to a range of materials. You’ll use it to design your own graphical interface on paper or card, and learn how to set-up a special touch-optimized microcontroller to connect to your graphics. After this workshop, you’ll have a clear understanding of how you can create a touch sensor on practically any surface, and you’ll have your very own musical instrument to take away!