libhandoff0 binary package in Ubuntu Precise amd64

 libhandoff is used in the GPE Palmtop Environment to
 cause another program instance to come to the
 foreground. This is used when alarm triggers (like atd)
 wake the device and then need to load another program to
 show the reason for the device waking up. When
 gpe-calendar starts it looks at a well known location to
 find another instance of itself. If it does, it tells
 that instance to grab the focus.

Source package