![]() ![]() Consequently, QR codes can be decoded by scanning vertically and horizontally and do not require the orientation positioning required of linear barcodes. The scanning technology used for QR codes is camera-based. Unlike linear barcodes which contain information accessed in some data tables, QR codes normally encode the actual information, ranging from web address to mapping coordinates. The QR code (Quick Response Code) is a two-dimensional symbol that can contain a wider range of encoded data. Light-based readers beam a red laser over the symbol to decode the barcode data so the corresponding information can be obtained from a database. ![]() ![]() The technology to “read” or scan a linear barcode is based on reflectance properties contrasting dark bars on a light background. Linear barcodes, such as UPC barcodes, are symbols that typically contain numeric or alphanumeric data adhering to some identification guidelines.
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