Remember this DIY camera? You can send it an email and it will promptly send back a picture of your space from its perch. Cool idea, right? But it takes a lot of electrical and coding know-how to get it set up. If you want something a little easier (and with streaming video) to keep an eye on your space, check out this Google+ hack.
You can easily set up a home surveillance system today. right now. Using gear you've already got lying around the house. One that accessible anytime, from anywhere in the world (with an internet connection). You just need a computer with a webcam and two Google accounts.
"First, create a second Google Account, and put the alternate account in its own circle. Then, start a hangout with just that circle. When you want to checkup on how everything's going along in your house, you can just join the hangout with your alternate account, and you should see what's happening."
Lifehacker adds that this will work even if your screen saver has come on back at home. But it won't work if your machine falls to sleep, so change your settings accordingly.