What is a QR code?
A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional code) first designed for the automotive industry. QR codes are commonly known in Japan where it was created by one of Toyota’s subsidiary companies Denso-Wave in 1994.
A QR code is a two dimensional barcode that holds specific information in it. When you scan and decode a QR code using any mobile phone with a camera and a free QR code decoder on it, you would be able to decipher and access the information. It could be a Web site URL, a person’s contact details, or just simple text.
More recently, the system has become popular outside of the industry due to its fast readability and comparatively large storage capacity. The code consists of black modules arranged in a square pattern on a white background. The information encoded can be made up of any kind of data (e.g., alphanumeric, symbols).
QR codes storing addresses and Uniform Resource Locators (URLs) may appear in magazines, newspapers, books, art, TV, billboards, product packaging, promotional products, on signs, on bus stations, on realtor’s home for sale signs, on business cards, dog collar, offline purchasing or on almost any object about which users might need information.
QR-Code Data Capacities
QR codes are also known for their high data capacity. QR-Codes have become more popular than the typical barcode as the typical barcode can only hold a maximum of 20 digits, whereas the QR-Code can hold up to 7,089 characters. There for a QR code is capable of handling several dozens to several hundred times more information. QR codes are also able to encode symbols which are great for other countries who speak a different language to use them. Not only does a QR code use less space than a conventional bar-code but it also can be damaged and missing up to 30% of the code from damage or wear and it will still be able to be read. Conventional bar-codes had to be scanned in certain directions where a QR code can be scanned at 360 degrees and even integrated into graphics and shown at any angle and can still be read.
QR-Code Data Capacities:
- Numeric only Max 7,089 characters Alphanumeric
- Max 4,296 characters
- Binary (8 bits) Max 2,953 bytes
- Kanji, full-width Kana Max 1,817 characters