What is a 2D barcode?
2D barcode is a graphical representation of the sequence of numbers or letters. It has been designed to be easy to print, compact size and easily read the scanner. The barcode identifies an item, person or other object by a unique number that potentially refers to information in the database. This allows you to scan the barcode to increase prices, product descriptions or information about medical patients depending on how the scan system works. Unlike its one -dimensional counterpart, the 2D barcode is able to store much more information, mainly because it uses a number of dots of similar grid instead of simply sequence of lines. Over the past many decades, it has undergone several changes because the technology slowly caught up with the concept. In the end, she took the cooperation between several large companies to work and spread it in retail stores around the world.
2D The barcode is progress above the one -dimensional barcode for several reasons. Is able to represent more than just numerical data and insteado can represent letters, numbers and other characters. It also contains a method of correction to ensure that the code is read correctly.
In sensitive industries, 2D barcode can also contain different methods of encryption. One of them involves covering what could otherwise occur as normal data by distraction of nonsensical symbols or patterns into the image. Another method is the encryption of information and then hangs it again before printing, providing the added layer of security against information read by an unauthorized person.
Some 2D barcodes are able to store more than 7,000 characters in their printed design. This allowed them to be used to store and transmit much more information than a standard one -dimensional barcode. They can be used to store information on personal identification cards and medical graphs or to transmit text files. They even appeared as rEqually vehicles because they can be scanned with mobile devices charged with the appropriate software. This is possible because the information can only be transmitted through the barcode itself without the need to index it to the existing database.
Variations of 2D barcode were developed. These include 3D barcodes that are physically etched to the surface of the materials and then reading the difference at the field depth. Radio-frequency identification (RFID) removes most optical aspects of 2D barcode and instead uses the printed circuit to transmit line code information for receivers that can read them. Despite this development, one -dimensional and 2D barcodes remain the most widespread.