When [Upload the data only when a Wi-Fi connection is established] is set to on in ScanSnap Home ( → [Settings] → [Camera settings]), photo images taken with the ScanSnap Home's camera function can only be uploaded when a Wi-Fi connection is available.
When no Wi-Fi connection is available, uploading of photo images to a cloud service is put on hold.
The images that are put in hold will be automatically uploaded to the cloud service when the mobile device is connected via a Wi-Fi connection.