I was just reading a thread on /pol/ nostalging about how much better Americans had it 30 and 40 years ago. Whether you remember better times or not, conditions, particularly urban conditions, are worsening for most people. When you look at places where crime is worse than it is in the US, such as parts of Mexico, South Africa, and so on, you see that homes are fortresses - gated, fenced, barred windows and steel doors. 50 years ago that was the extent of technology available. Today cameras are almost always part of those security measures.

People pay attention to crime as it does more harm to them, and act. What we're discussing is basically a new kind of security technology, and you're right, few know about it, or will anytime soon. But it will become better known as it becomes better developed, and people look for ways to protect themselves.

I think it's only a matter of time.