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Re:Encoding your WiFi access point password into a QR code by colejohnson66 on Monday December 30, 2019 @11:48PM (#21919028)
I (not OP) would say bytes would be closer. The product name could be 20 characters long (20 bytes minimum)
Re:Encoding your WiFi access point password into a QR code by tzs on Tuesday December 31, 2019 @01:51AM (#21919422)
OP was assuming the receipt would list the product UPC code rather than product name. A UPC code is 12 digits, which can be encoded in 40 bits.