Play with Firefox OS on Your Desktop

You can now play with Firefox OS on your desktop, by installing a Firefox browser add-on Firefox OS Simulator, called r2d2b2g.

Download, install the Firefox browser add-on, and start the Simulator by following the instruction in link below, then you will be at the lock screen of Firefox OS. Slide (with mouse) to the left to activate camera app or to the right to unlock.

Read more on how to install and use the Firefox OS Simulator
Read more about Firefox OS