iCam is one of the most useful apps in the App Store. I use it when I travel. I use it for security. I use it to listen to my sump pump when I am away, to be sure my basement isnt getting flooded. My one request would be to record audio along with the video. For $5 its the least expensive security system I know of.
Pierceim about iCam - Webcam Video Streaming, v2.7