RDA is one of the neatest things I've ever seen when I was working as a QA specialist. It allows you to connect and physically use a phone to test your applications remotely on the real hardware. This means not needing to buy a ton of phones. Video output is grabbed directly from the framebuffer and pushed across the internet.

The sad thing is that RDA was always VERY expensive anyways to the point that we just decided it was more cost-effective to buy the devices.