The problem with this method is that it's computationally unstable, i.e. quite error-prone. Consider this, if accelerometers were any good for positioning, we'd have no need for GPS or GLONASS. Even for indoor positioning, accelerometers alone won't be enough.

Bit of a difference between

* Something that needs to stay accurate over 10 years, and the consequence of failure could be as serious as directing a person the wrong way down a one way street.

* Something that needs to stay accurate over 30s -2 hours, depending on the game, and the consequences could be as serious as making people have to compensate for the drift in their game of virtual table tennis.

I do see your point, but you are drawing unfair comparisons to prove it.

About games, the problem can be minimized if the game allows assumptions: for example in some sport games like tennis and table tennis you can reset initial velocity and position each time you serve. OTOH in games with open worlds and/or free roaming, particularly in vast outdoors zones (indoors, again some, assumptions are possible to reset initial values, for example each time you stop and open a door), not having on the fly calibration can decrease accuracy after a while.

  I agree, just that it isn't Motion plus! Also, if there had been boxing in Wii Sports Resort which uses two M+, one in each hand to control each of your Mii's fists, would it still be less accurate than say the same thing using two Moves? That's what I've been asking. I've already gotten my answer though but I thought I should point out to you that Wii Boxing doesn't use Motion plus.

Most probably using two M+ should allow enough geometric assumptions to devise a way to recalibrate on the fly, so filling the gap with Move. The fact that boxing happens in a very limited and closed space and the boxers start each round from theis corners helps for this purpose too. Again, whether assumptions can be made or not to overcome this WM+ shortcoming depends strongly on the kind of game or even on each single game's design: long roaming in open spaces is most probably where WM+ risks being weakest, but game designers can sometimes find, or better create in their worlds, things that allow such needed assumptions. Anyway recalibration on the fly, if possible, is on the shoulders of game developers, while Move provides a feature to do it without any other effort than calling the proper function in its library.

yawn kids and their wiis. Play a move game and see for yourself. When it comes to anything releated to consols you will NEVER get the truth about how something is unless you play it for yourself. What didn't you know that some people exagerate the truth just so the consol they favour comes out on top. Its called fanboyism mate and when comparing anything PS3 VS Wii releated only a few peoples answer are genuine

Why do ninties take it to heart that the move is way more accurate than the wii motion +? I am sure most of you probably purchased your Wii for mario games anyway and the PS3 isnt getting them anytime soon so stop making up false stories and whining.

check this

http://www.youtube.com/watch?v=fqi2eaY_gZ0

Oh my, the final waggle fest on WM+ is beyond terrible. But it must be said that many Wii games ads actually encourage waggle fest playing style, the celebrities playing boxe games in Wii ads, for example, actually play in the same precise way Kevin Butler was mocking it in that ad for Move.

Didn't you just make a "fanboyism" remark in your first sentence?  I only buy Nintendo consoles and I am older than you.  Please stop the only kids play Nintendo systems bs statement.  It doesn't help your cause.  I am sure many people will not even read the end of your paragraph when you start your post with such a bs statement.