Oddbean new post about | logout
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Ava | 11 months ago (raw) | root | parent | reply | flag +1 
 so cool
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Ryan | 11 months ago (raw) | root | parent | reply | flag +1 
 It's like an audio QR code. It is also resilient, surviving low quality radio, and YouTube compression. You could sneak messages in any audio or video recording 🤔
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Ava | 11 months ago (raw) | root | parent | reply | flag 
 i love it