english: Here's an example from Hong Kong, where some kids made a game and then built their own physical interface device and had a light sensor, so the light sensor detects the hole in the board, so as they move the physical saw, the light sensor detects the hole and controls the virtual saw on the screen and saws down the tree.
non_english: Evo primera iz Hongkonga. Deca su napravila igricu i sopstveni uređaj koji je imao svetlosne senzore i ti senzori detektuju rupu na tabli i kako oni pomeraju testeru u stvarnosti svetlosni senzor detektuje rupu i kontroliše virtuelnu testeru na ekranu i seče drvo.