E Ink — a name synonymous with e-reader screens — just debuted a new writing display technology called JustWrite. The tech offers the company’s familiar monochrome aesthetic — albeit in negative this time, with white on black.

The key here, as with most of E Ink’s technology, is minimal power consumption and low cost, the latter of which it was able to accomplish by dumping the TFT (thin-film-transistor LCD). Instead, it’s a thin roll that could be used to paper surfaces like conference rooms and schools, in order to let people write on the walls using a stylus with practically no latency, as evidenced in the below GIF.

“The JustWrite film features one of E Ink’s proprietary electronic inks and offers similar benefits as E Ink’s other product lines: a paper-like experience with a good contrast and reflective display without a backlight,” the company writes. “The JustWrite film is an all plastic display, making it extremely durable and lightweight, with the ability to be affixed and removed easily, enabling writing surfaces in a variety of locations.”

The technology could go head to head with the likes of Sony and reMarkable on drawing tablets, but E Ink appears to be more interested in embedding it in non-traditional surfaces. No word yet on how or when it will come to market, though the company is showing it off in person for the first time this week at an event in Tokyo.