May 10, 2011 15:35:01
This type of system scares me. Any system that can be used locally and nationally for terror alerts is dangerous. As just about all systems ever built have been compromised by either hacking, spies, or social engineering, this system will be vulnerable. Especially by foreign governments. Imagine the consequences of a hacker breeching security of such a system that will allow for a false terror alert to be broadcast to everyone in the US all at one time, especially if it will give instructions from the President. There is no such thing as localized if the system can be used nationally. It would just be an override.
Imagine a message like "I am the President and we are under attack. I am declaring martial law. Local police no longer have authority and the military will be the emergency responders. We are under attack and you must return home immediately. Speed limits are no longer in effect in order to allow you to return home faster. Do not stop for police as they no longer have authority and I instruct all police to return to their stations until the military arrives. Walmart and grocery stores are instructed to give away all food for free until further notice. Do not pick up your children from school. The military will bring them home.
Or how about, the U.S. is under nuclear attack. Take cover, missiles arriving in 15 minutes. This is the President.
Never have all of your eggs in one basket. Cell phones are portable, and unless the government is 100% spying on your location at all times real time, there is no way to localize your message via GPS.