Remember months ago when those guys made that simple hack for the Wiimote that allowed it to track your head movements and move the screen on camera according to that? Remember how we all thought “Oh wow, that’s true 3D!”? Well, we were not the only ones. Now a Japanese eroge developer, Tech48, has put the principle to work for its new title.

Teatime is a game, like many other eroges lately, where its just you and a 3D girl and you get to… interact with her to your hearts content. The only difference being that this game uses a webcam loaded with infrared LEDs to track your head movements and move the camera accordingly. What does this translate to really? Upskirts.

While a gimmick at most the feature does have one very evident advantage. Without the need to control the camera with a mouse or keyboard, your hands are free to… knit a sweater for the homeless. Here’s a video of the game in action.

With any luck it wont be long until we see these technique being applied to more mainstream games that might approach this technology with much grander ambitions that looking up a girl’s skirt.

[Tech48 Mildly NSFW]