Key points
- Do not block safety documentation because data is unavailable.
- Use local storage, sync queue, and retry handling.
- Preserve both device time and server-received time.
- Show clear sync states: pending, synced, failed, conflict.
Why offline-first matters
Many rural operations cannot depend on constant internet. If a check-in app fails when data is poor, staff may stop trusting it.
The app should save the check-in first and upload it later.
What the record should include
A useful offline check-in includes trip ID, staff ID, status, device time, note, delay reason, optional GPS if available, battery level if available, and sync status.
Idempotency keys help prevent duplicate uploads when sync retries.
How Travo handles the model
Travo's Android-first architecture uses local storage and a sync queue so field staff can continue documenting movement even when internet is unreliable.
The dashboard can later show synced check-ins and overdue records for supervisors.
Frequently asked questions
Can offline check-ins prove the exact time?
They preserve the device time and add server-received time after sync, giving both original field timestamp and upload timestamp.
What happens if a record fails to sync?
It should remain visible as failed or pending, with retry options, instead of being silently lost.