https://www.youtube.com/watch?v=z9dP9F5nKpY
That was in 1960s.
Could it be used by intelligence community for covert operations ?
Because so far, there isn't much publication or application of this discovery
and knowledge in human's daily life.
https://www.youtube.com/watch?v=z9dP9F5nKpY
That was in 1960s.
Could it be used by intelligence community for covert operations ?
Because so far, there isn't much publication or application of this discovery
and knowledge in human's daily life.
