Apple Watch: how apps from Facebook, BMW and more are being put together

Nothing can come out of the secret room, and nothing with a connection to the outside world can go in

(Getty)

The developers of apps that will launch with the Apple Watch have been making them in a secret lab, hidden in Apple’s Cupertino headquarters.

BMW, Facebook, airline United Continental and other companies have been fine-tuning applications for the watch, according to a Bloomberg report. To keep the features of the watch secret, the company is requiring companies to work together in secret rooms at Apple.

No phones are allowed inside the room, there is no internet connection and no materials can be brought in with the test watches, according to the report. The code that is being tested on the watches has to be brought in to the room on a hard drive that can’t leave Apple headquarters.

Apple looks after that code itself, and will send it to the companies closer to when the watch is launched.

The watch will be launched at an event on Tuesday, though the watch is not expected to launch until some time after that.