>>5905061
It's a bit lazy. You can have all sorts of fun with IR sensors because people aren't used to seeing in IR and common everyday things don't behave the same way as typically we often build things to shield and outright reflect IR in order to keep heat in or out. Seeing a dim reflection of yourself in a glass window: normal. Seeing a bright image like a self illuminating ghost: omgwtf! But in reality it's simply because glass is meant to be as transparent as possible to visible light, but as close to a perfect mirror for IR and so your body heat will reflect like a mini-sun off a good window.
And so, superimposing a shadowy figure on your kinect capture is lazy when with a bit more effort he could have got himself an IR reflection that would have looked far less like an after effects tutorial.
The depth sensor as well can be fun because it uses time of flight, and so a little bit of poisoning the well with an IR light lets you make 3D shapes.
