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c'mon; we already had similar devices in a ballpointpen-look-alike over 40 years ago, and of course, we took it to school and tried to let unaware teachers and other kids "sign" something. The moment they pressed the button on top to get out the mine usually was followed by the moment, when the "pen" flew across the classroom and the swearing (and the laughing of those "knowing") started >:-) That's the only reason why you make such things ...
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