IGN auf Twitter: „From a PC joystick to a network system for the NES in 1988 to the never released Wii Vitality Sensor, here are (almost) all of Nintendo's accessories and peripherals
E3 - 2009: Wii Vitality Sensor - YouTube
All Is Forgiven - Penny Arcade
Nintendo debuts Wii Vitality Sensor - The San Diego Union-Tribune