Kinect Specs Reveal Two Player Limitation

UK-based online retailer Play.com has listed the full technical specifications of Microsoft's upcoming Kinect, as provided by Microsoft. While the system apparently tracks up to six people at a time, it is only capable of tracking two "active players." We're not sure exactly how an "active player" is defined, but reading the specifications, the term is again used to describe the twenty-point skeleton tracking system and "ability to map players to Live Avatars," so it would appear that for all intents and purposes, only two people can play full-body Kinect games at a time.

The full spec sheet, courtesy Play.com, is below.

Sensor
Colour and depth-sensing lenses
Voice microphone array
Tilt motor for sensor adjustment
Fully compatible with existing Xbox 360 consoles
Field of View
Horizontal field of view: 57 degrees
Vertical field of view: 43 degrees
Physical tilt range: ± 27 degrees
Depth sensor range: 1.2m - 3.5m
Data Streams
320x240 16-bit depth @ 30 frames/sec
640x480 32-bit colour@ 30 frames/sec
16-bit audio @ 16 kHz
Skeletal Tracking System
Tracks up to 6 people, including 2 active players
Tracks 20 joints per active player
Ability to map active players to Live Avatars
Audio System
Live party chat and in-game voice chat (requires Xbox Live Gold Membership)
Echo cancellation system enhances voice input
Speech recognition in multiple