QR Code - Quick Return Code

Giriş

QR Code ve Bar Code farklı şeyler. 

1. Bar Code

Bar Code sadece sayı için kullanılır. Barcode için farklı formatlar var

1.1 UPC 

Kuzey Amerika'da kullanılır. UPC-A ve UPC-E formatları var. Açıklaması şöyle

UPC-A is the standard UPC barcode type, containing 12 digits that encode the product’s information. The UPC-E acts as a compressed form of this code, as it can take the original 12-digit value and suppressing it to 6 digits with a seventh checksum digit. If your UPC value does not start with zero, however, you cannot compress it into a UPC-E code. These should be mainly used in retail and simple product encoding as they are not equipped to convey complex information. 

1.2. EAN 

Açıklaması şöyle

EAN barcodes were created for use in Europe but are recognized internationally. The two types of EAN code are EAN-13 and EAN-8, with EAN-13 being the most widely used. Like the UPC format EAN codes can only encode numeric data, which allows it to be scanned quickly and easily. EAN-13 contains 13 digits that represent the country code, product and manufacturer information, and the checksum digits. EAN-8 contains 8 digits and is intended for use on products with packaging that is too small to feature an EAN-13 code.  

2. QR Code

Açıklaması şöyle. QR Code örneğin string için kullanılabilir. 

... barcode formats are considered 1D types, as they can only encode simple, numerical data like product codes. However, if you wish to convey more complex information, a QR Code, which is a 2D format, is ideal. Short for Quick Return code, a QR code can be used to convey a wide variety of information by scanning with a QR code enabled device such as a smartphone. These can be used for product details, marketing purposes, and sharing service information such as menus.