The profession of a spy is as old as the world. Even in ancient Babylon in the Code of Hammurabi, and later in the Old Testament, a very detailed description of espionage is given as a way to gain advantages over the enemy.
Since then, espionage technology has gone a long way. Why is there ancient Babylon, if the "bugs" and other espionage accessories from the time of James Bond can cause today only an ironic smile.
So during the notorious "cold" war, such things as a pistol camouflaged under a tube of lipstick, nicknamed "the kiss of death", or an umbrella stinging with a poisoned needle with deadly poison were used as means of eliminating unwanted persons. By the way, they were developed by KGB specialists.
Lipstick "kiss of death"
Deadly Sting Umbrella
The US intelligence services did not sit idly by. Their most famous Cold War know-how is a microphone implanted in a cat's ear. The transmitter was located near the skull, the battery was in the stomach, and the antenna was mounted in the tail. However, it was not possible to teach the art of espionage to cats. Instead of spying on the territory of the Soviet embassy, they were mainly engaged in finding food.
But the visual microphone is already a child of our time. It was invented by a group of researchers at the Massachusetts Institute of Technology, together with colleagues from Microsoft and Adobe. The visual microphone is able to identify sound even from the other side of the thick glass.
In this case, a high-speed camera is used that shoots at a speed of 6 thousand frames per second. It detects the slightest vibrations of objects, such as houseplants or an abandoned package of chips. After appropriate processing, the vibrations are "sounded".
The possibility of "breaking" the codes of devices implanted into the human body - an insulin pump, defibrillators and pacemakers - is being considered. And Almax has developed the EyeSee device, which is discreetly installed in clothing stores, usually behind or directly in mannequins. It is used to identify and classify buyers who prefer a particular thing.
And finally, what all the world's intelligence services dream of is secure communications. One of the latest developments is quantum encryption, which uses the principles of particle physics. Such messages can only be read by those to whom they are addressed.