Traditional touch screens suffer from a limitation of size—tabletops for example can’t become larger than arm’s length because you couldn’t reach the objects in the middle. With Multitoe, we propose a touch screen floor that could fill an entire room and allows for many more objects by using high-resultion multi-touch tracking while still allowing direct manipulation by touching. We used frustrated total internal reflection due to its ability to sense pressure. This allows us to see the users’ soles while they are walking over the floor. Based on this, we can recognize the foot posture and identify users, or control applications with a high degree of freedom.