License plates readers are becoming more widely used in Washington, D.C. -- partly due to the possibility of continued terrorist threats in our nation's capital. The Washington Post reports that some D.C. residents are upset with the cameras.

There's a fine line between privacy concerns and what's good for the society as a whole. For example, the use of license plate readers is a great help when it comes to getting the word out about AMBER alerts and missing children. That's if the abducting vehicle hasn't switched out its tag yet…

Britain is a society that's full of surveillance technology. Brits themselves are split over this "camera culture." If you think we have too many cameras here, you ain't seen nothing until you visit England!

Clark has previously discussed WiLife.com, a company that sells affordable cameras that are easily installed and can be monitored remotely via the Internet. The base system sells for around $200. Some business owners even use it to remotely monitor their shops.