Apple Inc has acquired a startup focused on making lenses for augmented reality glasses, the company confirmed on Wednesday, a signal Apple has ambitions to make a wearable device that would superimpose digital information on the real world.

Akonia could not immediately be reached for comment. The company was founded in 2012 by a group of holography scientists and had originally focused on holographic data storage before shifting its efforts to creating displays for augmented reality glasses, according to its website.

In augmented reality, digital information is overlaid on the real world as in the popular game Pokemon Go. Mobile phones use their camera system to do this on the phone’s screen, but major technology firms are racing to create glasses that will show digital information on transparent lenses.

“This is one of those huge things that we’ll look back at and marvel on the start of it,” Cook said of augmented reality on a conference call with investors last year.

The Akonia acquisition is the first clear indication of how Apple might handle one of the most daunting challenges in augmented reality hardware: Producing crystal clear optical displays thin and light enough to fit into glasses similar to everyday frames with images bright enough for outdoor use and suited to mass manufacturing at a relatively low price.