QR code

File Format
Name	QR code
Ontology	Physical File Formats Bar codes QR code
Released	1994
QR code that goes to File Format Wiki

QR codes (Quick Response) are a type of 2-dimensional bar code which is currently very popular. Originally designed for industrial use in tracking items as they move around a warehouse or factory, they are currently mainly used to provide hyperlinks in ads, articles, and signs which somebody with an appropriate reader (such as apps for a smartphone) can use to retrieve what is generally a URL linking into the Web, though other kinds of content can also be stored.

References

• QR code (Wikipedia)
• Official QR site
• Reed Solomon Codes for Coders - Wikiversity tutorial
• QR code generator