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Dual-Message QR Codes.

Kuo-Chien Chou1, Ran-Zan Wang1

  • 1Department of Computer Science & Engineering, Yuan Ze University, 135 Far-East Rd., Chung-Li, Taoyuan 320, Taiwan.

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Summary
This summary is machine-generated.

A new dual-message Quick Response (QR) code allows standard readers to access two distinct messages based on scanning distance. This innovative QR code technology enables varied content delivery for enhanced user experiences.

Keywords:
2D barcodeQR codedual-message QR codenested QR codetwo-layer QR code

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Area of Science:

  • Computer Science
  • Information Technology
  • Data Encoding

Background:

  • Standard Quick Response (QR) codes store single data sets.
  • Current QR code technology lacks distance-variable information retrieval.
  • Novel encoding methods are needed for advanced data applications.

Purpose of the Study:

  • To propose and validate a novel dual-message QR code capable of conveying two distinct messages.
  • To enable message differentiation based on scanning proximity (close range vs. large distance).
  • To explore the feasibility of distance-dependent information access using modified QR code modules.

Main Methods:

  • Designed two-state module blocks for QR codes, altering perceived module values with scanning distance.
  • Explored the rules governing standard QR code reader module value interpretation.
  • Constructed a dual-message QR code utilizing these novel two-state modules.
  • Conducted experiments to verify the readability of both embedded messages.

Main Results:

  • Demonstrated successful encoding and retrieval of two separate messages within a single QR code.
  • Confirmed that scanning distance reliably determines which of the two messages is accessed.
  • Experimental results affirmed the high feasibility and effectiveness of the proposed dual-message QR code design.

Conclusions:

  • The developed dual-message QR code offers a viable method for distance-variable information display.
  • This technology can be applied to create innovative, interactive applications, such as personalized event invitations.
  • The dual-message QR code enhances user experience by providing layered or context-aware content access.