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  1. Imagine being able to specifically control this, and it being tiny and on your fingertip.

    You could potentially replicate any fingerprint that would work on a capacitive fingerprint reader (same stuff that is on your cell phone)

  2. Reminds me of magnetic domain walls that would form on a microscopic level in a magnetic transition. I’m sure this is unrelated, but it’s a neat similarity considering they’re both magnetic systems.

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