For simple workflow from this app:
1. Scan the delivery order / dispatch order by open camera and QR code scan function to obtain the order no.
2. After get the order information from data server, then user can find the delivery order from [送貨單] page.
3. They can start each of order by click the function key.
4. From each delivery order, they have to scan the item serial barcode and the app will save these record and identify if the order has complete scanning process or not.
5. After that, user can select [Finish] or [Follow up] action key to update the order status back to the ERP system.
For special case, user can remove the local storage data by using the function key from setting page.