1. What is a QR Code?
A QR code can contain information about a web address (URL), the time of an event, contact information (such as a vCard), an email address, an SMS message, a text message or even a text message. Lice is geolocation information. Depending on which QR code reader you use when scanning, it will lead you to a website, call a phone number, view a message ...
|Ability to store QR code data|
|Simple number||Maximum 7,089 characters|
|Numbers and letters||Maximum 4,296 characters|
|Binary number (8 bits)||Maximum of 2,953 bytes|
|Kanji/Kana||Maximum 1,817 characters|
|Error correction capabilities|
|Level L||7% of the codeword can be recovered.|
|Level M||15% of code words can be recovered.|
|Level Q||25% of code words can be recovered.|
|Level H||30% of codewords can be recovered.
4. How is QR code different from traditional barcode?
QR codes are similar to traditional barcodes you often see on cartons, products that are tracked by retailers for inventory management, and product prices in business. The difference between QR codes and traditional barcodes is the amount of data they hold or share.
Traditional barcodes have lines that are one-dimensional long and can only store 20 digits, while two-dimensional QR codes can store information thousands of alphanumeric characters. QR codes hold more information and the ease of use helps a lot for small businesses.