QR Code was developed by a subsidiary of Toyota and originally designed for automotive industrial use. It has become one of the most popular types of two-dimensional barcodes due to their reading speed, accuracy, and superior functionality characteristics. Depending on the application a QR-Code can be used to encode specific URL or ticket numbers: in a mobile marketing scenario a QR Code symbol is printed or displayed on products or marketing related material (like displays, magazines or web-sites). A user can now scan and decode this QR Code using a mobile phone with a built-in camera and suitable decoder software. After decoding the QR Code symbol, the user is forwarded to product related web-sites or marketing campaigns.
Capable of storing more information and more character types that any other 2D barcode. QR Code is capable of 360 degree (omni-directional), high speed reading. QR Code accomplishes this task through position detection patterns located at the three corners of the symbol. These position detection patterns guarantee stable high-speed reading, circumventing the negative effects of background interference. The Reed–Solomon error correction algorithm provides four error correction levels to prevent damage and assist in reconstruction.
Most smart phones do not come with a default application for scanning these codes. You need to download a third-party application in order to read QR Code Consumers who do not own a smart phone are limited even more in their access to QR Code The final size of the QR code does not affect the amount of characters the QR code can hold. A billboard-size QR code holds the same amount of characters as a QRC on a business card.
Normative standards: The normative standards for the QR-Code barcode symbology are named JIS X 0510 (Japan) or ISO/IEC 18004 (ISO International Standard).
Data capacity: A single QR Code symbol can hold up to 7089 numeric characters, 4296 alphanumeric characters, 2953 bytes (binary data) or 1817 Kanji characters (character set according to JIS X 0208).
Character set: The original QR Code defines JIS-8/Shift-JIS as default character set, which corresponds to ECI 000020 (by design other character sets are possible by using different ECIs). While the QR Code 2005 standard (ISO/IEC 18004:2006) defines Latin-1 as default character set, mobile applications often use UTF-8 as default (without additional ECIs). So it's up to the bar code reader (or decoding application), which character set is used.
Error correction: QR Code 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 QR Code symbol without data loss.
QR Code supports 'Structured Append'. Up to 16 QR Code symbols can be concatenated. If a scanner or decoder supports this feature, it returns the concatenated data content in the correct order.
QR Code printing quality: To optimize barcode quality a QR-Code symbol should not be printed with dots smaller than 4 to 5 device pixels.
Security experts warn of new risks surrounding Quick Response Codes.
Risks include linking to dangerous web sites with browser exploits, enabling the microphone/camera/GPS, and then streaming those feeds to a remote server, analysis of sensitive data (passwords, files, contacts, transactions) and sending email/SMS/IM messages. These actions could occur in the background while the user is only seeing the reader opening a seemingly harmless web page.
One can use Label Flow™ barcode software for printing QR Code barcodes or use ID Flow™ ID card software, Eventleaf™ event registration software, Lobby Track™ visitor management software for printing ID cards, attendee badges, and visitor badges with QR Code.