We all know what barcodes (or 1D barcodes) are and see them everyday on products. Cashiers in retail stores scan these codes with optical readers to bill the items that we want to purchase. Each barcode (typically the UPC-A) contains a 12-digit numerical code that helps the billing software identify the product.
But this was obviously not enough. Retailers and manufacturers wanted more information in a smaller space. Enter 2D Barcodes.
What is a 2D Barcode?
A 2D Barcode is a two-dimensional way to represent information. It is similar to a linear 1D barcode, but can represent more data per unit area. Typically, it can store upto 350 times the information a 1D barcode can store.
What are the types of 2D Barcodes?
There are quite a few widely-accepted standards of 2D Barcodes:
This is the most popular standard of 2D Barcodes and is widely used in inventory management, marketing & advertising, education, and tourism.
A QR Code can contain information such as alphanumeric text, web URLs, contact information, Wifi network name and password, calendar event information, and maps location. A QR Code can store upto 4,296 alphanumeric characters.
Another interesting advantage of a QR Code is that it doesn’t have to be black-and-white and can easily be designed.
QR Codes can be created and designed online using QR Code Generators. A QR Code can either be scanned by handheld optical readers or simply by using a mobile application on your smartphone.
Invented in 1995, an Aztec Code is primarily used in the transport industry by companies such as Eurostar and Deutsche Bahn on tickets sold online and printed by customers. Unlike barcodes, an Aztec Code can store alphanumeric information.
A Data Matrix is another 2D Barcode that can store text or numeric data – a total of upto 1556 bytes. It is most popularly used to mark small items such as small electronic components, and food and beverage items.
Invented in 1991, the PDF417 format of a 2D Barcode is primarily used in the transport industry. These codes can be seen on boarding passes of flights. The barcode has patterns each of with contain 4 bars and is 17 units long.
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