HouseCam allows you to monitor your baby, house, or pets when you away from home.
All you have to do is to:
(1) Dig out your old iPhone/iPod
(2) Install this app
(3) Link to your DropBox account
(4) Place your iPhone/IPod to where you want to monitor
(5) Photos will be taken periodically/automatically
(6) Check the photos everywhere via DropBox
Requirements: iOS 5.0 or later. Compatible with iPhone, iPad,...