The Afterglow system is simple and yet effective – it enables users to draw directly on the projection screen using a laser pointer. This laser pointer doubles up as a drawing tool to emphasize selected items on the screen, and works great as a cursor controller as well. It relies on a camera, laser pointer and projector to work in tandem in order to achieve such an effect, where the PC-connected USB camera will track the motion of the laser dot, while the Afterglow software will get to work by calculating the geometric distortion automatically. Integrated slide controls for PowerPoint also enables the user to control their presentation using the laser pointer. The Afterglow system won’t come cheap though as it retails for $1,980 on Amazon.
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