Barcodes history began in the fifties. First, railcars, and the U.S. postal vehicles tested. First published in 1966, but only mass market took place in 1973, when the U.S. retail sector has introduced the UPC (Universal Product Code). The technology mass market for some time, however, hampered by the barcode leolvasós cash registers high price, so this is only half of the world's richer took place in the eighties.

The barcode reading speed, accuracy, and high functionality due to become widely popular. As we continue comfort use of spread codes required in a market where more information can be stored, all in a smaller area. Alternatives are tried, such as increasing the number of digits in the barcode, or create multiple barcodes. But they have further complicated the read operation, and increased print area. The two-dimensional code was the answer to these needs.

The 2D codes have evolved a method of multiple barcode increased information density matrix method.

Several two-dimensional codes have been developed, among which the most popular PDF417 and DataMatrix, Maxi Code, and QR Code. The first three in the United States developed, while the last Japan.

The QR Code
The QR code in Japanese Denso-Wave developed in 1994, in order to facilitate the identification of certain car parts during manufacture. The English abbreviation of the name of Quick Response received (fast response), which refers to the rapid decryption speed and, consequently, rapid responsiveness. Fault-tolerant ability of the supported data formats, and quickly became popular among the two-dimensional codes. Adoption as an international standard started even faster spread of not only industry, but also in everyday applications.

The QR code is one of the largest value that the horizontal and vertical directions also contain information, while the bar code in only one direction. Good features and that is at the corners of a square field is easy to scan and shooting at any angle (even rotated or tilted too) can be easily identified and processed data from the scanner.

QR matrix can be of different sizes: 21 x 21 point size 1 177 x 177 40-point size. (All higher numbers increased by 4 dots per page.)

QR code storage capacity
As long as the bar code can store a maximum of only 20 tracks, while the QR code can handle several hundred times as much data. Capable of storing many types of data, such as numeric and alphabetic characters, Kanji, Kana, Hiragana symbols, binary, and control codes. The maximum amount of the following table:

numbers onlyMax. 7089 character
alphanumeric valuesMax. 4296 character
Binary data (8-bit organization)Max. 2953 byte
Kandzsi/Kana Max. 1817 character
The QR code or personal identification may serve, for example, the German Lufthansa has recently introduced an electronic check-in system, where the passengers 'boarding passes' to your phone receives, mobilkom form by the boarding leolvashat the airline. This e-boarding pass on important information, such as the passenger's name, flight number and departure time, and thus it is only for passengers with hand baggage only for boarding security checks to be carried out. The boarding gate, a scanner reads the data from the mobile phone of the ticket and the passenger may fly without the use of paper in full flight with Lufthansa.

Since QR codes can store large amounts of data, as well as WAP and Web addresses can store. System you use this option, the QR codes are issued each webcímeit contain information about objects.