Why a QR scan is ignored and shows a 'Scan ignored' toast
Learn why the app shows a 'Scan ignored — <reason>' toast instead of accepting a scan, and what each reason means on the Tracking and Shipment pages.
When a hardware QR/barcode scanner fires while the page is not ready to accept a scan, the app shows a toast 'Scan ignored — <reason>' instead of silently dropping it. The exception is camera mode on the desktop Tracking page: there the hardware scanner is not listened to at all, so a scan does nothing and shows no toast.
On the Tracking page the reasons are: the previous invalid scan must be cleared (dismiss the red Invalid-QR screen or the on-camera result sheet), a scan is still being processed, the rejection modal is open, a Reject & Remake confirmation is open, no station is mapped to the user, the tracking history panel is open, or the 'Panel Not Required' alert is waiting to be acknowledged (tap Acknowledge to close it).
On the Shipment page: camera mode on, uncleared invalid scan, the 'Shipment not marked as Dispatched' confirmation that appears when unloading from a shipment that was never dispatched, the shipment detail modal, the shipment document modal, or the work order selector being open.
On phones and tablets, camera mode is a full-screen takeover: results appear as a sheet over the camera that dismisses itself after a few seconds, and the usual tracked/already-tracked toasts are not shown there.
✓ Verificato nel prodotto il 15 ottobre 2026