The Air Server app is priceless for those of us in the training and documentation industry.
It is an inexpensive app that you download onto your Mac and then can tie to via AirPlay from your iPhone, iPad, etc – so long as they are on iOS6.
You mirror your screen on the mobile device to your display/Mac device.As a trainer, then I open Captivate, SnagIt, ScreenSteps, etc. (whatever you use for screen capture) to create training videos or screenshots for documentation on apps, or how to use the device itself.
Information available at: http://www.airserverapp.com/en/Info/InAction