QR Code - Standards

Standards

There are several standards in documents covering the physical encoding of QR Codes:

  • October 1997 – AIM (Association for Automatic Identification and Mobility) International
  • January 1999 – JIS X 0510
  • June 2000 – ISO/IEC 18004:2000 Information technology – Automatic identification and data capture techniques – Bar code symbology – QR code (now withdrawn)
    Defines QR code models 1 and 2 symbols.
  • 1 September 2006 – ISO/IEC 18004:2006 Information technology – Automatic identification and data capture techniques – QR Code 2005 bar code symbology specification
    Defines QR code 2005 symbols, an extension of QR Code model 2. Does not specify how to read QR Code model 1 symbols, or require this for compliance.

At the application layer, there is some variation between most of the implementations. Japan's NTT DoCoMo has established de facto standards for the encoding of URLs, contact information, and several other data types. The open-source "ZXing" project maintains a list of QR Code data types.

Read more about this topic:  QR Code

Famous quotes containing the word standards:

    “Men are rewarded for learning the practice of violence in virtually any sphere of activity by money, admiration, recognition, respect, and the genuflection of others honoring their sacred and proven masculinity. In male culture, police are heroic and so are outlaws; males who enforce standards are heroic and so are those who violate them.”
    —Andrea Dworkin (b. 1946)

    “As long as our people quote English standards they dwarf their own proportions.”
    —Ralph Waldo Emerson (1803–1882)

    “In this nation I see tens of millions of its citizens, a substantial part of its whole population, who at this very moment are denied the greater part of what the very lowest standards of today call the necessities of life. I see one third of a nation ill-housed, ill-clad, ill-nourished. The test of our progress is not whether we add more to the abundance of those who have much, it is whether we provide enough for those who have too little.”
    —Franklin D. Roosevelt (1882–1945)