We might have seen digital blinds before, but Sonte's on-window film, deep within is pitched at home-owners rather than business signage. The switchable film is a thin, light layer that can be retro-fitted to existed windows and the company reckons it's so easy that you should even be able to do it yourself. We saw the film used both as a picture display and as a see-through panel that can be made frosted -- as you can see above in our before-and-after. To control how it looks, you'll need to install either the Android or iOS app, where there's controls for multiple smart films. Another use posited was transforming la
