Kinect "gets confused" when its users sit on the floor - but most other issues caused by non-standing players have been ironed out.
That's according to Blitz Games chief Andrew Oliver, who told the latest issue of Edge Magazine that Microsoft's device previously had problems reading the movements of those slumped on the sofa.
However, he revealed that these had since been fixed via improved software libraries.
"It's a very clever system [Microsoft has] got," he said. "They look at the depth data, they work out fairly quickly if it's a human, and then they apply the algorithms to give you all the bones or whatever.
He added: "Okay, so one big thing that people were asking was whether you could sit on the sofa. The new libraries work, but there are certain things, like in our fitness game, where you sit on the floor and it gets confused."
However, Oliver suggested that most reading issues with Kinect can be fixed with "just a bit of image processing" on the development side.
"So they've given [studios] a generic piece, which is actually pretty impressive and covers most cases - certainly all the standing up, and now sitting down," he said. "[If developers] want to go further than that, then do it yourself in software."
The quotes come as part of Edge 218's ten-page Kinect spectacular. The new magazine is with subscribers now and will be in stores tomorrow. Buy your copy of Edge and have it delivered to your door.