Watch the Hand
The PlayStation controller uses a lighted globe at the end of a wand (two are shown below) to precisely place a character in three-dimensional space. A camera tracks the ball to determine the position of the player’s hand; crucially, it uses the apparent size of the ball to gauge depth. This allows precise placement of a character’s hand, which is helpful when shooting things.
Product: PlayStation Move motion controller
Cost: $50 ($100 bundled with required PlayStation Eye camera; console sold separately)
Availability: September 2010
Source: us.playstation.com/ps3/playstation-move
Companies: Sony
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