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1D Barcode
2-Factor Authentication
2-Way SMS
2D Barcode
3G
 

2D Barcode
2D barcodes contain more information than conventional one-dimensional, linear barcodes (1D Barcode), making use of the vertical dimension to pack in more data. 2D means 'two dimensional'. A barcode is an optical machine-readable representation of data. Conventional barcodes get wider as more data is encoded.

Unlike linear or 1D barcodes, a 2D barcode is made up of patterns or squares, dots, hexagons and other geometric patterns and has a greater data representation capability. The sequence of black and white blocks represents information or an action. There are different types of 2D barcodes available:
  •  Aztec code is a high-density, two-dimensional matrix-style barcode symbology that can encode up to 3750 characters.
  • A Data Matrix code is a two-dimensional matrix barcode consisting of black and white cells/modules arranged in either a square or rectangular pattern.
  • PDF417 is the latest development in the trend to pack the greatest amount of data in the smallest space. In a very short time PDF417 has established itself as the standard 2D barcode. However, it is mostly used in printed 2D barcodes and not in a mobile environment.
  •  QR Barcode is a high capacity barcode intended for being decoded at high speed with a high fault tolerance. The  QR is short for Quick Response


Mobile 2D barcodes are widely used in mobile ticketing applications in the airline and transportation industries for SMS check-in and boarding passes. Mobile check-in and ticketing are expected to be the next key industry breakthrough in the airline industry, especially because of IATA's (International Air Transport Association) continuous work in BCBP (barcoded boarding passes). IATA expects to discontinue magnetic-stripe boarding passes after 2010 in favour of mobile boarding passes and m-tickets with 2D barcodes. In addition, 2D barcodes can also be implemented in event ticketing (concerts, movies, sport events) and discount couponing. 

Mobile tickets with 2D barcodes can be provided to the consumer in various formats, such as SMS (via WAP-Push), MMS, via a mobile application, or through the mobile browser (WAP). Because SMS can provide the mobile ticketing service from anywhere, at any time, without special applications and with a standard mobile phone, text messaging remains the best technology to handle applications such as mobile check-in, ticketing and discount couponing.