ScanEventHandler

ScanEventHandler is HP's utility application that manages scanner button functionality on HP printers and multifunction devices. When you press physical buttons on your HP scanner (like 'Scan to Email' or 'Scan to PDF'), this background service handles those button events and launches the appropriate scanning workflow on your Mac. It's typically installed automatically with HP printer drivers and runs invisibly in the background, allowing users to initiate scans directly from their device's control panel rather than having to start the scan from their computer. The app is essential for users who rely on their HP scanner's physical buttons for quick scanning tasks.