This way, if anything ever happens, the police and other proper authorities will be notified. This type of system is also actually much more affordable than many people realize. Of course, you will need to pay for the cameras themselves, which can be fairly expensive depending on the type of features and level of sophistication you are after. But that is a one time expense. I thought it was very interesting and informative about the new wireless security cameras that allow you to view footage from a secure site on the web. This seems like some advanced level system that I would have seen on a crime show or something, but it seems that this top of the line technology is now making it out to the general market.