Politics in here!

Cold War for decades between the forces of the liberal (the United States and its allies) with the power of the community (the Soviet Union and its allies) has occurred. United States Intelligence Agency (CIA) has worked hard during the war no doubt crept in espionage for important information.
Want to know what tricks they do? Below is an illustration of some tricks that are performed by the CIA.

1. Smuggle a spy through the boxes of goods or tank vehicles



2. Smuggle a spy through beverage packaging



3. Communicating through a shoelace pattern



4. Using Rubbing the back of the neck



5. Sending paper documents Deng techniques dabs Wax