Apple is considering expanding into wearable glass headsets and has talked about the project with potential suppliers, Bloomberg reported. The wearable headset would onnect wirelessly to iPhones, show images, along with other information and may use augmented reality, according to the report. Apple has ordered a small number of near-eye displays for testing but has not obtained enough for production on a larger scale, the report added. Should Apple ultimately decide to proceed with the device, it would be introduced in 2018 at the earliest.

AR, as it’s known, adds images and other digital information to people’s view of the real world, while virtual reality completely surrounds them with a computer-generated environment.

Apple declined to comment.

Apple Chief Executive Tim Cook said earlier this year that the company would continue to invest a lot into augmented reality.

Alphabet has discontinued its own wearable glass headset, Google Glass, and closed the social media account linked to the device earlier this year, ending its attempt to popularize the expensive devices with consumers.

Snap, a company which makes the popular messaging app Snapchat, also launched its own video-camera sunglasses last week.