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Differentiating laser pointers once detected

It is my intention to implement a laser pointer detection system, similar to the one described here: http://answers.opencv.org/question/52754/laser-pointer-detect-and-track/

However, in my project (a game) I would like multiple (2-10) players to have their pointers on the screen at any given time. What techniques could I use to discern which pointer belongs to which player? I would like to just use one camera for n pointers, rather than a camera per pointer.

Differentiating laser pointers once detected

It is my intention to implement a laser pointer detection system, similar to the one described here: http://answers.opencv.org/question/52754/laser-pointer-detect-and-track/

However, in my project (a game) I would like multiple (2-10) players to have their pointers on the screen at any given time. What techniques could I use to discern which pointer belongs to which player? I would like to just use one camera for n pointers, rather than a camera per pointer.

EDIT: There are currently no constraints on types of camera, types of laser or colour of laser.