TECHNOLOGY WANTS TO disappear. In computing’s early days, the machines swallowed entire rooms. Today, we wear them on our wrists. Soon, they could vanish completely, their smarts embedding directly into our surroundings.

Raj Sodhi has a name for this last scenario. “We call it the ubiquitous user interface,” he says. Sodhi is a co-founder of Lightform, a startup that’s looking to turn full-room projection mapping into living room technology. Projection mapping, also known as projected augmented reality, uses video projectors to cast light onto irregular surfaces like buildings, faces, and, yes, living rooms. For decades, this technology was too expensive and technically complex for the average person to use, but with Lightform, the company’s eponymous first product, Sodhi and his partners are automating the entire process. The company plans to begin taking preorders on the device this summer, price TBD.........