1. There are people who are already installing automatic sensors at home. These sensors are connected to the internet. Many of those people are interested in not only receiving the automatic alerts from their own sensors, but also in sharing the alerts with other people.

2. These other people may be interested in what's going on nearby, they may be concerned with their own safety, or they may even be willing to help out others in need.

3. The NEIGHBOR SIGNAL network connects them all.