1. The Physical Discovery Challenge
For a blind or visually impaired individual, finding where a QR code is located on a flat piece of paper or packaging is the primary obstacle. Without a tactile indicator, the user cannot point their camera at the code.
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Accessibility Engineering Guidelines:
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Tactile Corner Notches: Cut a physical semi-circular or triangular notch directly adjacent to the quiet zone of the QR code so users can locate it by touch.
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Embossed Borders: Utilize blind debossing or raised spot UV varnish along the perimeter of the quiet zone.
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Braille Identification: Include Grade 2 Braille text labeling the purpose of the code (e.g., "Scan for Audio Menu").
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Accessible Landing Pages: Ensure the target URL is fully compliant with WCAG 2.2 AA standards, featuring proper ARIA labels and screen-reader optimized headings.
