QR Code vs Barcode
Definition: QR codes are 2D matrix codes that store data in both horizontal and vertical dimensions, while barcodes are 1D codes that store data in horizontal lines only.
Traditional barcodes (UPC, EAN, Code 128) encode data in varying-width parallel lines, storing up to ~100 characters. QR codes use a 2D grid of squares, storing thousands of characters including URLs, contact info, and binary data. QR codes scan faster, from any angle, and work with smartphone cameras — barcodes typically need dedicated laser scanners.
Key points
- QR codes hold 100x more data than barcodes
- Barcodes scan in one direction, QR codes from any angle
- QR codes work with phone cameras, barcodes need scanners
- Barcodes are better for simple product identification
- QR codes are better for linking to digital content
- Both formats have built-in error correction
Frequently asked questions
Should I use a QR code or barcode?
Use barcodes for product identification (UPC/EAN at checkout). Use QR codes for anything linking to digital content — URLs, WiFi, contacts, menus.
Can a phone scan a barcode?
Most phone cameras can scan barcodes, but QR codes are designed for phone scanning and work more reliably at various angles and distances.
Are QR codes replacing barcodes?
Not entirely. Barcodes remain standard for retail product identification. QR codes complement barcodes by adding digital interactivity to physical products.
Related terms
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