This has been discussed a while ago: https://news.ycombinator.com/item?id=538705... | Hacker News

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		baxtr on Feb 3, 2018 \| parent \| context \| favorite \| on: “Invisible Electrostatic Wall” at 3M adhesive tape... This has been discussed a while ago: https://news.ycombinator.com/item?id=5387052

okket on Feb 3, 2018 [–]

Even further ago: https://news.ycombinator.com/item?id=3274335

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