IGN on 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
All Is Forgiven - Penny Arcade
Nintendo kills off Wii vitality sensor - AfterDawn
Nintendo Patent Shows Wii Vitality Sensor Game Example - Siliconera
Amazon.com: Lactivx 2X Wii Silicone Case Cover with Wrist Strap for Wii Remote Controller (Black) : Video Games
Wii Vitality Sensor Monitors Gamers' Heart Rates During Play
The GREATEST Wii Accessory Nintendo Abandoned (Vitality Sensor) #nintendo # wii - YouTube
E3 09: Wii Vitality Sensor announced, no one knows why – Destructoid