MacMost Now 626: Keynote Remote Without a Wi-Fi Network
You can control a Keynote presentation on a Mac with your iPhone, iPod touch or iPad using the Keynote Remote app. But this requires that both the Mac and iOS device be on the same wi-fi network. In cases where you don't have a wi-fi network, such as a presentation hall or classroom, you can establish your own local network using your Mac, and connect to it with your iOS device. This allows you to control the Keynote presentation directly from your device to the Mac.