Security cameras, transit cameras, Ring cameras; surveillance cameras are everywhere. As noted above, they cover the entire State of California to look for wildfires. The big problem is that we don't have people to look at them 24/7.
That's about to change. The company Pano AI, located in San Francisco, has developed technology that uses artificial intelligence to detect a fire based on TV inputs. The AI program learns to correctly figure out if smoke during the day, or heat wave lengths at night represent an actual fire; and then automatically notifies the appropriate fire authority. This, of course, is simply another type of automatic alarm that uses another type of sensor. The difference is that this sensor has more complex data to use as opposed to a simple temperature reading or pressure drop across a valve datum. It can also integrate this with other information such as weather, time of day, or GPS. Also, the AI computer program can improve performance by feedback from it's mistakes.
Pano AI is already used in 10 States, Australia, British Columbia and surveys 30 million acres. Customers include utilities, ski resorts, and governments.
It seems to me that this technology can be easily scaled to include every camera connected to the internet.