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Hidden Message Zombie Detector
Use a slave flash to briefly illuminate a hidden message. Read more on MAKE The post Hidden Message Zombie Detector appeared first on Make: DIY Projects and Ideas for Makers.
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Magnetic Hidden Messages
Hide a secret message in magnetic flux! Read more on MAKE The post Magnetic Hidden Messages appeared first on Make: DIY Projects and Ideas for Makers.
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Spy Tech: Polarized Hidden Messages
We all know sunglasses make any spy look cool, but these will let you see secret messages! This secret message project uses polarized film (technically a linear absorptive polarizer) to make our...
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