1. A method of configuring interaction between a set of already enrolled players and a computer based application, comprising: executing the computer based application using a computing system, the computer based application interacting with one or more players of the set of the already enrolled players who are physically co-located in a physical real-world play space, the already enrolled players are users of the computing system wherein the computing system previously identified the set of already enrolled players using a sensor system by having detected one or more physical features of each of the set of already enrolled players with respect to one or more tracked locations in the physical real-world play space and having generated and having stored, for each of the set of already enrolled players, one or more stored visual signatures of the detected one or more physical features for each tracked location; automatically, via the sensor system and the computing system, determining that a person has become detectable in the physical real-world play space, wherein the person that has become detectable in the physical real-world play space is not one of the one or more players of the set of the already enrolled players currently interacting with the computer based application in the physical real-world play space; automatically via the computing system and the sensor system, detecting one or more physical features of the person and tracking one or more locations in the physical real-world play space of the detected one or more physical features of the person, generating one or more respective visual signatures of the detected one or more physical features of the person for each tracked location, identifying whether the person is a specific already enrolled player of the set of already enrolled players based on comparing the one or more respective visual signatures to the one or more stored visual signatures of the set of already enrolled players, and responsive to the one or more stored visual signatures of a specific already enrolled player matching the one or more respective visual signatures of the person, concluding that the person is the specific already enrolled player of the set of already enrolled players; and mapping the person to the specific already enrolled player and interacting with the person using the computer based application running on the computing system based on the mapping.