Doctor Richard Marks, who is a senior researcher working for the Research and Development department for Sony Computer Entertainment, has stated that he believes the PlayStation Move motion tracking controller, which uses a wand with buttons, is more flexible than the Kinect from Microsoft, which is based around recognizing body motion patterns and uses no actual physical object.

The scientist was talking to with Edge magazine and he responded to the Microsoft line that even one controller is too many by saying, “I don’t think that point of view is quite right… I think you can do some things really well with just a camera, but there are a bunch of experiences you could never do as well.“

He added, “I think our system is really flexible because we still have a camera - we could still do all the stuff EyeToy did and more - but we also have this more high-fidelity controller which you can hold in your hand and is tracked really accurately, and you have the buttons.”

Sony kept the physical controller in the Move set up in order to make sure that it can deliver a wide range of gaming experiences to those who buy it.

On launch Move will be supported through a variety of more causal oriented titles, like Sports Champions and TV Superstars, but later in the year and early in 2011 more hardcore players will also be able to use it to play first person shooter Killzone 3 and the upcoming Resistance 3.

Sony is launching the PlayStation Move this month while Microsoft will wait until November to put out the Kinect.

The two companies are hoping that the motion tracking technologies they are introducing will limit the sales advantage that the Nintendo Wii currently has and will allow the two companies to extend the life span of the PlayStation 3 and Xbox 360.