QR Code Images
 2D Barcode QRCode with encoded URL (Mobile Marketing)
 2D Barcode QRCode with 6 characters
 2D Barcode QRCode with 200 characters
| QR Code (alias Quick Response Code, QRCode, QuickRead Code, Quick-Read Code)QR Code Application Areas
QR Code (also Quick Response Code) is used for encoding large amounts of data, usually between 10 and several 100 characters are encoded in a single symbol.
The QRCode symbology is mainly used in Asia (Japan) for automotive and logistic applications. Starting with 2006/2007 the QRCode barcode is also in use in the areas of mobile marketing and business (e.g. Japanese business cards). Depending on the application the QR-Code can contain specific URLs or ticket numbers. In a mobile marketing scenario a QRCode symbol is printed or displayed on products or marketing related material (like displays or magazines). A user can now scan and decode this QRCode using a mobile phone with a built-in camera and suitable decoder software. After decoding the QRCode symbol, the user is forwarded to product related web-sites or marketing campaigns.
QR Code Classification
QRCode is a 2D barcode symbology with very high data density. The normative standards for the QR-Code barcode symbology are named JIS X 0510 (Japan) or ISO/IEC 18004 (ISO International Standard).
QR Code History
QRCode was developed 1994 by the company DENSO.
QR Code Technical Data
- Data capacity: A single QRCode symbol can hold up to 7089 numeric characters, 4296 alphanumeric characters, 2958 bytes (binary data) or 1817 Kanji characters (character set according to JIS X 0208).
- The default character set is JIS-8/Shift-JIS, which corresponds to ECI 000020. Other character sets are possible by using different ECIs.
- Error correction: QRCode offers a built-in error correction based on Reed-Solomon algorithms. The error correction level can be adjusted (supported levels are Low, Medium, Quartile, High). Depending on the error correction level it is possible to restore between 7% (Low) and 30% (High) of unreadable codewords in a QRCode symbol without data loss.
- QRCode supports 'Structured Append'. Up to 16 QRCode symbols can be concatenated. If a scanner or decoder supports this feature, it returns the concatenated data content in the correct order.
- QRCode printing quality: Each dot in a QR-Code symbol represents a bit. In contrast to linear bar-codes which encode the information usually in the ratio of the bars or spaces to each other a QR Code is more tolerant with respect to poor printing quality. To optimize barcode quality a QR-Code symbol should not be printed with dots smaller than 4 to 5 device pixels.
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