What are 2D codes and why do they matter?

Videojet Knowledge Hub Team

January 11, 2026

2D codes, code types, traceability

2D codes store data both horizontally and vertically, enabling far greater capacity and built-in error correction compared to traditional 1D barcodes. Their versatility makes them essential for compliance, traceability, and consumer engagement in today’s increasingly regulated and connected markets.

What is a 2D code?

2D codes or two-dimensional barcodes are graphic symbols that store data both horizontally and vertically. This structure allows them to contain significantly more information, up to around 3,000 characters, compared to about 30 stored in a single line in most traditional 1D codes. 2D codes enable higher data capacity, error correction, and easy scanning, making them essential for compliance, traceability, and consumer engagement.

What types of 2D codes exist?

Types of code	Best suited for	Image of code
QR codes (Quick Response)	Popular for consumer engagement and mobile scanning.
DataMatrix	Common in industrial and regulatory applications.
Dot codes	Used for specialized packaging and design flexibility.

What are the key advantages of 2D codes?

Higher data capacity and damage resistance: Even if part of the code is scratched or damaged, it can still be read thanks to built-in error correction.
Flexible readability: They can be scanned from different angles and, in the case of QR codes, by smartphones without requiring a dedicated app.
Traceability and engagement: Beyond supply chain transparency, 2D codes can also connect consumers directly to digital content like websites, instructions, and promotions, enriching the overall customer experience.