Use Handoff with Keynote
When your Mac and iOS devices are near each other, you can use Handoff to pass a presentation you’re working on from one to the other. For example, if you’re working on a Keynote presentation on your iPhone and are near your Mac, you can pick up the presentation on your Mac and finish it there.
OS X Yosemite on a Mac
iOS 8 on an iOS device
Bluetooth 4 (Bluetooth LE) on both systems
When Handoff is set up, you see a Handoff icon in the Dock on your Mac, or in the bottom-left corner of your device’s lock screen. You set up Handoff in System Preferences on the Mac and in Settings on your iOS device.
For instructions on setting up and using Handoff, click the desktop to switch to the Finder, choose Help > Mac Help, and search for “Handoff”.