A locomotion interface using a group of movable tiles

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CirculaFloor, a project led by Prof. Iwata (presented at SIGGRAPH 2004):

CirculaFloor is a locomotion interface using a group of movable tiles. The movable tiles employ holonomic mechanism that achieves omni-directional motion. Circulation of the tiles enables the user to walk in virtual environment while his/her position is maintained. The user can walk in arbitrary direction in virtual environment. This project is a joint research with ATR Media Information Science Labs.

A video here (22Mb).

Why do I blog this? because I am curious of various tangible interfaces (+ gaming potential).