The new technology places glass optical fibers, which contain a laser diode that sends a signal beam into the optical, into the flutes.

FORBES: Fiber-Optic Sensors Set Stage for Extreme Snipers

The company makes two pieces of the system: a laser diode that shoots a signal at the player, recognizes her motions and reflects them back to the console, at which point they hit a second JDSU part, an optical filter.

FORBES: Magazine Article