Configure your scanner buttons
http://scanbuttond.sourceforge.net/

Modern scanners usually have several front panel buttons which are intended to trigger certain actions like copying, faxing or mailing the scanned document.

This daemon queries the scanner button status several times per second. If it detects that a button is pressed, it runs a shell script which the button number is passed to as a command line argument. Because scanbuttond is accessing the scanner directly via libusb, there should be no conflicts with SANE or other scanner drivers: scanbuttond simply won't touch the scanner hardware while you are using SANE. This means that you can still scan even when running scanbuttond.