From Sonte’s new film can switch up its opacity in just a second, and it can be controlled from your iPhone. Cover a window and flip it from transparent to opaque at the tap of a screen, blocking out nosy passersby or ugly distractions whilst still letting in most of the light. It’s like turning any room into a bathroom. Only without the extra plumbing required.

Launching Monday via Kickstarter, the Sonte film will start at $60 (although Sonte’s PR folks didn’t say how big the $60 sheet will be). you have to connect it to power, and wen installed the sheets are daisy-chained together using a small clip that connects them.