Hacker News with Generative AI: Data Encoding

The Secret World of Coupon Fraud: Exploiting Barcode Vulnerabilities (medium.com)
You’ve scanned barcodes countless times — UPC, EAN, and GS1 Databar — but have you ever wondered what they’re encoding? Until 2006, neither had I. That year, I started as a software engineer at Coupons.com, tasked with transitioning our coupons to the GS1 Databar system.
Smuggling arbitrary data through an emoji (paulbutler.org)
With ZWJ (Zero Width Joiner) sequences you could in theory encode an unlimited amount of data in a single emoji.
Storybits: Error Resistant Mnemonics (rya.nc)
At DEFCON 22, Dan Kaminsky and I talked a little bit about something I built which he dubbed “Storybits[1]”. Storybits can reversibly transform short strings of binary data into a series of words designed to produce a mental image.