Fujitsu ScanSnap S1500M Operator's Manual page 377

Actions (for Mac OS Users)
4.
Click the [Scan to Mobile] icon.
You cannot start scanning when the Quick Menu is displayed. Wait until ScanSnap
Manager links with [Scan to Mobile] before scanning another document.
Do not move, delete, or rename the scanned image in other applications when the
Quick Menu is displayed.
The [Scan to Mobile] window appears.
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