electronic stylus

Then a technician gave Hockney an electronic stylus connected to the projection system so that he could sketch onto the walls with light.

The similarity to writing on paper is enhanced by a feature that makes thicker or thinner lines depending on how hard you push the stylus on the screen — and no electronic stylus is necessary.

Other tracks feature instruments such as the theremin, the claviola and the Stylophone, a handheld synthesizer played with an electronic stylus.