Abstract: A system and method for defining a three dimensional (3D) zone which, upon entrance or exit of an element as detected by a depth capture system, raises a digital event. The zone comprises a region of space in an environment the interaction with which occurs by activation of pixels in the zone. The event can be provided to an application to perform programmatic tasks based on the event. Generation of the event may be limited to the entrance or exit of a specific person, body part, or object, or a combination of these. Using the digital event, interaction with real world objects may be tied to digital events.