## Camera shows a black screen
Pick & Pack needs camera permission to scan barcodes.
1. Go to your device **Settings → Apps → Pick & Pack → Permissions**
2. Enable **Camera**
3. Reopen Pick & Pack
If the camera is working in other apps but still shows a black screen in Pick & Pack, close and reopen the app.
## Scanner fires twice (double-scan)
Go to **Settings → Scanner** and set scan speed to **Slow**. This reduces sensitivity and prevents double-scans on fast barcodes.
## Camera is slow or laggy
Close and reopen the pick or pack screen. If the issue continues, restart the app. On Android, switching between zoom levels and back can cause camera lag — resolved in the latest version.
## Wrong barcode is being matched
Ensure you are scanning the product barcode, not a shipping label or outer box barcode. In Guided pick mode, only the current item's barcode is accepted — an error tone plays if you scan a different item.
## Android back button closes the app while the scanner is open
Update Pick & Pack to the latest version. This issue is resolved — pressing the Android back button while the scanner overlay is open now closes the overlay instead of exiting the app.
## Camera torch turns off unexpectedly
Tap the torch icon in the scanner overlay to toggle it back on. Manual torch state is maintained independently of the scanner — update to the latest version for the most reliable torch behaviour.
## RF scanner keyboard doesn't appear
When using a software keyboard alongside an RF scanner, the keyboard may be suppressed. Tap directly into the input field to force it to appear.
Updated 2 months ago
## Camera shows a black screen
Pick & Pack needs camera permission to scan barcodes.
1. Go to your device **Settings → Apps → Pick & Pack → Permissions**
2. Enable **Camera**
3. Reopen Pick & Pack
If the camera is working in other apps but still shows a black screen in Pick & Pack, close and reopen the app.
## Scanner fires twice (double-scan)
Go to **Settings → Scanner** and set scan speed to **Relaxed**. This reduces sensitivity and prevents double-scans on fast barcodes.
## Camera is slow or laggy
Close and reopen the pick or pack screen. If the issue continues, restart the app. On Android, switching between zoom levels and back can cause camera lag — resolved in the latest version.
## Wrong barcode is being matched
Ensure you are scanning the product barcode, not a shipping label or outer box barcode. In Guided pick mode, only the current item's barcode is accepted — an error tone plays if you scan a different item.
## Android back button closes the app while the scanner is open
Update Pick & Pack to the latest version. This issue is resolved — pressing the Android back button while the scanner overlay is open now closes the overlay instead of exiting the app.
## Camera torch turns off unexpectedly
Tap the torch icon in the scanner overlay to toggle it back on. Manual torch state is maintained independently of the scanner — update to the latest version for the most reliable torch behaviour.
## RF scanner keyboard doesn't appear
When using a software keyboard alongside an RF scanner, the keyboard may be suppressed. Tap directly into the input field to force it to appear.
