'PreCursor' is an invisible layer that hovers in front of the screen and enables novel interaction that reaches beyond the current touchscreens. Using a computer mouse provides two levels of depth when interacting with content on a screen: one can either just hover or click. Hovering allows receiving short descriptions, while clicking selects or performs an action. PreCursor provides this missing sense of interaction to touchscreens. PreCursor technology has the potential to expand beyond a basic computer screen. It can also be applied to mobile touchscreens, to objects in the real world, or can be the launching pad for creating a 3D space for interaction.