StackAR explores the augmentation of physical objects within a digital environment by abstracting interfaces from physical to virtual implementations. StackAR is a Lilypad Arduino shield that enables capacitive touch and light base communication with a tablet. When pressed against a screen, the functionality of StackAR extends into the digital environment, allowing the object to become augmented by the underlying display. This creates an augmented breadboard environment where virtual and physical components can be combined and prototyped in a more intuitive manner.