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Understanding QR Codes

Every tagd-ai tag has a unique QR code that links directly to your content. This guide explains how they work and how to use them effectively.

How tagd-ai QR Codes Work​

Unique Short IDs​

Each tag gets a unique 6-character identifier (like a7Bx9k). This short ID:

  • Is permanently assigned to your tag
  • Never changes, even if you edit content
  • Creates short, easy-to-type URLs: tagd-ai.com/a7Bx9k

Dynamic Content​

Unlike static QR codes, tagd-ai codes are dynamic:

  • Update anytime - Change content without reprinting codes
  • Track scans - See analytics on who's scanning
  • Control access - Adjust permissions at any time

Scanning QR Codes​

On iPhone​

  1. Open the Camera app
  2. Point at the QR code
  3. Tap the notification that appears

On Android​

  1. Open the Camera app (or Google Lens)
  2. Point at the QR code
  3. Tap the link that appears

In tagd-ai App​

  1. Open tagd-ai and tap the Scan button
  2. Point your camera at any QR code
  3. tagd-ai-specific codes open directly in the app

QR Code Best Practices​

Size Guidelines​

Use CaseMinimum SizeRecommended
Close-up scanning (< 30cm)2cm × 2cm3cm × 3cm
Arm's length (30-60cm)3cm × 3cm4cm × 4cm
Signage (1-2m)6cm × 6cm10cm × 10cm
Large displays (> 2m)15cm × 15cm20cm × 20cm

Rule of thumb: The QR code should be at least 1/10th of the scanning distance.

Contrast and Colors​

For reliable scanning:

  • Use high contrast (dark code on light background)
  • Avoid red or pink for the code itself
  • Keep a white "quiet zone" around the code
  • Don't place over busy backgrounds or patterns

Printing Tips​

  • Vector formats (SVG) are best for printing at any size
  • PNG at 300 DPI works well for most print jobs
  • Test print before ordering large quantities
  • Consider weatherproofing for outdoor use

Error Correction​

tagd-ai QR codes use high error correction, meaning they can still scan even if:

  • Partially obscured (up to 30% damage)
  • Slightly dirty or worn
  • Printed at lower quality

However, for best results, always print clean, high-quality codes.

QR Code Types in tagd-ai​

Standard QR Codes​

The default black-and-white codes that work with any scanner.

Customized QR Codes​

Add branding with:

  • Custom colors
  • Logo in center
  • Rounded corners
  • Different patterns

Learn more in QR Design Options.

Troubleshooting​

Code Won't Scan​

  1. Check size - Make sure it's large enough for the distance
  2. Check contrast - Ensure dark code on light background
  3. Check damage - Look for tears, smudges, or wear
  4. Check lighting - Very dark or very bright conditions can affect scanning
  5. Clean the lens - Smudged camera lenses cause issues

Wrong Content Appears​

  • Verify you're scanning the correct QR code
  • Check if the tag was recently edited
  • Clear your browser cache and try again

Slow to Load​

  • Check your internet connection
  • Try scanning with the tagd-ai app for faster loading
  • Large images in tags may take longer to load

Security Considerations​

What's in the QR Code​

tagd-ai QR codes only contain a URL - never sensitive data. The URL points to tagd-ai's servers, where permissions are checked before displaying content.

Protecting Your Tags​

Even though the QR code is public, you can:

  • Password-protect specific content blocks (protected fields)
  • Limit access to specific domains
  • Enable access logging to track who views
  • Require location to access (location-based access)

Learn more in our Security documentation.

Next Steps​