Abstract
Quick response (QR) code has become one of the more popular two-dimensional barcodes because of its greater data capacity and higher damage resistance. The barcode scanners can easily extract the information hidden in the QR code while scanning the data modules. However, some sensitive data directly stored in QR codes are insecure in real-world QR applications, such as the e-ticket and e-coupon. To protect the sensitive data, this paper explores the characteristics of QR barcodes to design a secret hiding mechanism for the QR barcode with a higher payload compared to the past ones. For a normal scanner, a browser can only reveal the formal information from the marked QR code. The authorized user/scanner can further reveal the sensitive data from the marked QR tag. The experiments demonstrate a satisfactory secret payload and the feasibility of the proposed scheme.
Highlights
Many multimedia applications, such as labeled street view images [1], video streaming [2], and consumer photos [3], add quick response (QR) codes to help readers to distribute and understand some related information
The QR code is a type of trademark barcode with a machinereadable optical label, in which the information of the barcode can be quickly extracted through scanning the label
To increase the hiding payload, this paper considers the characteristics of QR codes to propose a novel data hiding method, which is an extended version of [17]
Summary
Many multimedia applications, such as labeled street view images [1], video streaming [2], and consumer photos [3], add quick response (QR) codes to help readers to distribute and understand some related information. The authorized user can further extract the confidential secret from the same generated QR tag via the barcode reader.
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