No one can run through a combination of permutations, as they could with a password. Nano machines find applications in transportation, from sensitive automotive air bags to guidance systems for airplanes. Among their advantages is the economy of producing such small machines, which are made of silicon, the same material as a computer chip. It will be able to measure position, velocity, acceleration, elevation, orientation, chemistry, whether something is environmentally safe or not - and you will be able to fine tune and control these processes. That's the goal.
Nanotechnology threatens to make fantasy and science fiction harder to write.
Nano machines will be able to do something similar in the human body, finding problems and fixing them. Stevie Wonder made news recently because he will have an eye operation using new miniaturized sensors. When done, he will have electronic vision tied to his nervous system. That is thanks to this miniaturization technology. N.M. Sandia, a science-based engineering laboratory funded by the U.S. Department of Energy and managed by Lockheed Martin, provides micromachining technology for individuals and organizations.