As an aside, during the Cold War, Soviet embassies abroad used manual typewriters for all sensitive information due to the various ways in which electronic type

As an aside, during the Cold War, Soviet embassies abroad used manual typewriters for all sensitive information due to the various ways in which electronic typewriters could be bugged. For an example of the sophistication of such attacks, see the Project GUNMAN document on the NSA's history subsite: http://www.nsa.gov/about/cryptologic_heritage/center_crypt_history/publications/index.shtml http://www.nsa.gov/about/cryptologic_heritage/center_crypt_h... For seven years the Soviets had bugged IBM Selectric typewriters in the US embassy in Moscow. The bugging device was remarkable, keying-off the magnetic flux of the machine's operation and transmitting this data by burst radio transmission.