Forrest M. Mims Jameco Electronics Puzzler 16

Secure Communications between Two Vehicles

By Forrest M. Mims III
Puzzler 16

Jim Timely, Jameco's ace inventory specialist, wants a highly secure method for an escort vehicle to send information to a Jameco cargo truck following behind as the two vehicles roll along a highway. The method must not employ visible antennas or other clues of the technology. Cell phones, Citizen's Band radio, wifi and other radio methods are unacceptable due to their security vulnerability.

Puzzler 16

How did Jake Whispers design a system that solves this assignment?

Puzzler Hint: Electromagnetic radiation is not confined to the radio spectrum.

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