This wall projection makes gym class a giant video game Lü is an interactive light projector with 3D cameras. It’s designed to be the focus of gym classes. Facebook Prev Article Next Article Gadgets Checkout these cool gadgets... Related Posts LucidTouch – Touch Behind The Screen Size Changing Lamp ToneX – The Resistance Workout Vest The Ray Gun In Action Ingenious Flash Drive Has Touchscreen Showing Files it Contains Laser Crossbow Shooting Saw Blades