Invisible tech, silent methods, and the race for signals reshaped the Cold War balance.
The KGB sourced geiger counters from church organs to detect uranium miners' ore levels during Stalin’s era.
Cold War espionage relied on tiny, invisible ink made from human sweat proteins, decoded via early biochemical scanners.
Some spymasters used edible secret ink embedded in factory-blueprints, readable only after exposure to specific temperatures and humidity.
Aerial photo intelligence once used pigeons trained to perch on mirrors, triggering microphotographs of sensitive sites without tripwires.
Invisible tech, silent methods, and the race for signals reshaped the Cold War balance.
The KGB sourced geiger counters from church organs to detect uranium miners' ore levels during Stalin’s era.
Cold War espionage relied on tiny, invisible ink made from human sweat proteins, decoded via early biochemical scanners.
Some spymasters used edible secret ink embedded in factory-blueprints, readable only after exposure to specific temperatures and humidity.
Aerial photo intelligence once used pigeons trained to perch on mirrors, triggering microphotographs of sensitive sites without tripwires.
Create your own on any topic in 30 seconds
Create Your Episode✨ Free to start • No credit card required • 600 minutes/month
