Spycraft
Covert Communication
Season 1 Episode 5 of 8
A look at the most important element for spies to operate successfully - the ability to use covert systems to communicate with their handlers that are secure from interception by the enemy. These range from old-school 'dead drops' to high-tech digital transfers
Spycraft airs on Sky History 2 HD at 10:00 AM, Sunday 11 May.
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Documentary