I (not OP) would say bytes would be closer. The product name could be 20 charact... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		colejohnson66 on Dec 31, 2019 \| parent \| context \| favorite \| on: Encoding your WiFi access point password into a QR... I (not OP) would say bytes would be closer. The product name could be 20 characters long (20 bytes minimum)

tzs on Dec 31, 2019 [–]

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.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact