The reason that the Navy Marine Corps Intranet has been impervious to intrusions while criminals were stealing terabits of information from other military networks is that it is managed as a single end-to-end system by one well-equipped company.
In addition, these systems monitor electric system parameters and pricing information to manage consumers energy costs, comfort, and health according to end-users personal preferences.
Nokia has filed a patent for an optical messaging system that can generate symbols and Morse Code, as well as decipher the information on the receiving end.