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While a black room or black chamber is often now used to refer to any place or organisation dedicated to code-breaking, its more exact meaning is a secret room in a post office, and, later and by extension, a telecommunications center used by state officials to conduct clandestine interception and surveillance of communications.Typically all letters or communications would pass through the black room before being passed to the recipient.
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While a black room or black chamber is often now used to refer to any place or organisation dedicated to code-breaking, its more exact meaning is a secret room in a post office, and, later and by extension, a telecommunications center used by state officials to conduct clandestine interception and surveillance of communications.Typically all letters or communications would pass through the black room before being passed to the recipient.
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