Leon Theremin
1896–1993Leon Theremin created a covert listening device “The Thing” that was placed in the U.S. ambassador’s Moscow office for seven years.
Particulars
Leon Theremin created a covert listening device called “The Thing”.
The Thing hung in plain view in the United States ambassador’s Moscow office for seven years and enabled Soviet agents to eavesdrop on conversations.
Compiled from Wikipedia. Automated record.