HELPDESKQR codes (Quick Response codes) are two-dimensional barcodes capable of storing and quickly transmitting various types of information. Their scanning speed and versatility have made them extremely popular.
QR codes work by encoding information, such as text or a web link, into a grid of small squares representing binary data. A scanner or camera reads this pattern, and software decodes it back into its original form.
They were invented in 1994 by the Japanese company Denso Wave, a subsidiary of Toyota. Originally developed to track parts in the automotive industry, Denso Wave chose not to protect QR codes with patents, which helped their global adoption.
Thanks to their fast reading speed and greater capacity compared to traditional barcodes, QR codes have expanded into other fields, such as marketing, healthcare, and payment systems.
Interesting facts about QR codes
- QR codes include an error correction system (Reed-Solomon correction), allowing them to be read even if partially damaged (up to 30% of the data can be lost).
- While most QR codes are black and white, they can be colored as long as sufficient contrast is maintained.
- QR codes can be updated or have their content changed without altering the code itself, as they often point to data stored online.
- QR codes saw a massive surge in usage during the COVID-19 pandemic, especially in contactless payment systems and digital menus.
- QR codes can be visually customized (e.g., incorporating logos or unique designs) as long as they remain scannable.
