Rainterior: Interactive Water Display

The Kakehi Group at Keio University is developing a display that creates interactive audiovisual effects using droplets of water."This is called rainterior. It's a water interface that makes rainy days fun. Rainy days can be a bit gloomy, so we wanted to make something that's more enjoyable the more it rains."In this system, images are projected directly beneath a pool of water that catches raindrops.