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oxidestrip.jpg

Very cool trick from anaglyph: Apply powdered iron oxide to the magnetic stripe on a swipe card to visualize the encoded data. [via Boing Boing]

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Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.


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