Perhaps a color coding for different materials would make consumer and robotic s... | Hacker News

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		neuralRiot on June 27, 2018 \| parent \| context \| favorite \| on: Plastic recycling is a problem consumers can't sol... Perhaps a color coding for different materials would make consumer and robotic sorting simpler.

mikec3010 on June 27, 2018 [–]

This or a very primitive 4 bit rfid

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