Skip to main content

Barcode Scanning

How to scan food barcodes to quickly find and log foods

2 min readUpdated Jan 15, 2026

Barcode Scanning

Scan product barcodes for instant food lookup and logging.

How to Scan

On Mobile

  • Open the ClapDiet app
  • Tap Foods or the + Log button
  • Tap the barcode icon 📷
  • Point your camera at the product's barcode
  • The food appears instantly
  • Tap to view details or log it
  • Supported Barcodes

  • UPC (US/Canada)
  • EAN (International)
  • Most product barcodes
  • Camera Permissions

    For scanning to work:

  • Allow ClapDiet camera access when prompted
  • If you denied it, go to your device settings:
  • - iOS: Settings > ClapDiet > Camera

    - Android: Settings > Apps > ClapDiet > Permissions > Camera

    Tips for Better Scanning

  • Good lighting: Ensure adequate light
  • Steady hand: Hold the phone still
  • Clean barcode: Make sure it's not damaged or obscured
  • Right distance: Not too close, not too far
  • What Happens After Scanning

    Food Found

  • Nutrition info appears
  • You can log it immediately
  • Adjust serving size if needed
  • Food Not Found

  • Try manual search
  • Check if barcode is damaged
  • Product may not be in our database yet
  • You can request it be added
  • Offline Scanning

    With Premium, common barcodes are cached:

  • Scan works without internet
  • Data syncs when you're back online
  • Most frequently scanned products available
  • Privacy

  • Camera is only active when scanning
  • We don't store photos
  • Only the barcode number is processed
  • Troubleshooting

    Camera won't open
  • Check camera permissions
  • Restart the app
  • Update to the latest version
  • Barcode not recognized
  • Try searching manually
  • Clean the barcode surface
  • Check if it's a valid product barcode
  • Wrong product appears
  • Report the issue (helps us improve)
  • Search manually instead
  • Use the generic version

  • Related Articles:
  • Daily Food Logging
  • Searching for Foods
  • barcodescanupccameraquick log