You can use an iPod, iPhone, or iPad as a webcam for chatting withing someone in another part of your house, or for chatting with someone across the world, using Apple's Facetime. Configure Facetime by creating an Apple account for each computer you want to connect with, then let other Facetime users know which account they can use to chat with you via Webcam. Here you can see how to use an iPod with Facetime as a Webcam to monitor your front door, while connected to a computer that is viewing the video feed remotely.
