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Two-Level QR Code for Private Message Sharing and Document Authentication

Two-Level QR Code for Private Message Sharing and Document Authentication

Starting at: Rs.6,500.00

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 Two-Level QR Code for Private Message Sharing and Document Authentication

The quick response (QR) code was designed for storage information and high-speed reading applications. In this paper, we present a new rich QR code that has two storage levels and can be used for document authentication. This new rich QR code, named two-level QR code, has public and private storage levels. The public level is the same as the standard QR code storage level; therefore, it is readable by any classical QR code application. The private level is constructed by replacingthe black modules by specific textured patterns. It consists of information encoded using q -ary code with an error correction capacity. This allows us not only to increase the storage capacityof the QR code, but also to distinguish the original document from a copy. This authentication is due to the sensitivity of the used patterns to the prin t-and-scan (P&S) process. The pattern recognition method that we use to read the second-level information can be used both in a private message sharing and in an authentication scenario. It is based on maximizing the correlation values between P&S degraded patterns and reference patterns. The storage capacity can be significantly improved by increasing the code alphabet q or by increasing the textured pattern size. The experimental results show a perfect restoration of private information. It also highlights the possibility of usingthis new rich QR code for document authentication.


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  • Model: PROJ7471
  • 999 Units in Stock
  • Manufactured by: ClickMyProjects

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This product was added to our catalog on Thursday 27 July, 2017.