Reported by mdcurran on 2011-09-17 06:11
Whether or not NVDA has the uiAccess privilages, it is not able to inject into the processes of metro apps. This means that:

• There is no typed characters spoken,
• No chance of display model information,
• No virtualBuffers.
  We currently try to inject in to any app via an in-process winEvent hook. We may be able to investigate other tricks like opening the process and creating a remote thread, though if thei're not allowing winEvents, then they're probably not allowing openProcess.
  We'll have to find out Microsoft's plans for this security-wize.