We recently got in touch with 3DRudder team, a foot-powered controller to move in VR or PC games like you move in real life. With the 3dRudder foot controller, you can use your feet to move in VR worlds.
Their team prepared a walkthrough inside Lake House scene and kindly handed us a unit for testing. Soon we should make some tests and release a video of it.
You can watch the Lake House scene with 3DRudder on Youtube: