READING QR CODES WITHOUT A COMPUTER

Summary from the TLDR Web Dev newsletter

QR codes have different parts, like finder patterns, separators, timing patterns, and format information. Mask patterns hide data and improve readability. Encoding modes specify how data is stored (e.g., numeric or alphanumeric). To decode a QR code, one can use a cheat sheet to identify the mask pattern, read the encoding mode, follow the reading order, find the total number of content bytes, and decode the content using a table. This guide takes readers through this process step-by-step with visuals.