But that would cost you battery all the time, while the e paper would just need ... | Hacker News

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		derN3rd on June 1, 2020 \| parent \| context \| favorite \| on: Show HN: Print a WiFi Login Card But that would cost you battery all the time, while the e paper would just need power to update the qr code

quickthrower2 on June 1, 2020 [–]

Good point. Dig out that old kindle!

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