Wow, the technique behind this sounds amazing. Infrared light going through the fingertip... damn, that sounds futuristic. Soon we are all playing with microchips under our skin. :D
However, what I fear is that it can't really implemented in much genres. I can't really imagine games for it other than some horror games and relaxing software. (which alone would already be cool but not enough) Also, I can't imagine this extending the lifcycle of the Wii much longer. By the time the Vitality Senser gets released, PS4 & Xbox 720 could already be in the starting blocks. And then's the problem of support... Even Wiimotion Plus doesn't have much games yet which support it. Heck, not even Nintendo itself supports it much. Recent examples: SMG2, Wii Party.
updated: 14.01.2012
playing right now: Xenoblade Chronicles
Hype-o-meter, from least to most hyped: the Last Story, Twisted Metal, Mass Effect 3, Final Fantasy XIII-2, Final Fantasy Versus XIII, Playstation ViTA
bet with Mordred11 that Rage will look better on Xbox 360.