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A comment on Ingenious Low-Cost Tilt Detection System (2018). Parent comment

Re:Ingenious Low-Cost Tilt Detection System (2018) by Double_a_92 on Tuesday March 03, 2020 @07:05AM (#22473706)
I would have to be ink, so you can't just dry the box. But even then they could siphon the ink out and put it back in shortly before delivery.
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Re:Ingenious Low-Cost Tilt Detection System (2018) by amelius on Tuesday March 03, 2020 @07:38AM (#22473932)
Perhaps add a transparent window over the cardboard?
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