Actually, this technology has been around since long before the Wii. The "LCD Top Gun" works exactly the same way. The big-screen arcade gun games have been doing this for about a decade now. Next time you see a big screen "House of the Dead 2" machine or even a newer game like "Ghost Squad", take a close look around the edges of the monitor. You'll see there are about a dozen infrared lights surrounding the screen. This is what the gun uses to determine its position.
There is a little bit of lag, and the aim is not as precise as traditional CRT-based light guns, but the advantage is that you can have a much bigger screen (including plasma, LCD, etc), and it doesn't have to flash every time you pull the trigger.
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Actually, this technology has been around since long before the Wii. The "LCD Top Gun" works exactly the same way. The big-screen arcade gun games have been doing this for about a decade now. Next time you see a big screen "House of the Dead 2" machine or even a newer game like "Ghost Squad", take a close look around the edges of the monitor. You'll see there are about a dozen infrared lights surrounding the screen. This is what the gun uses to determine its position.
There is a little bit of lag, and the aim is not as precise as traditional CRT-based light guns, but the advantage is that you can have a much bigger screen (including plasma, LCD, etc), and it doesn't have to flash every time you pull the trigger.