xserver-xorg-input-synaptics

About xserver-xorg-input-synaptics

From Debian's package description

This package provides an input driver for the X.Org X server to enable advanced features of the Synaptics Touchpad including:

• Movement with adjustable, non-linear acceleration and speed
• Button events through short touching of the touchpad
• Double-Button events through double short touching of the touchpad
• Dragging through short touching and holding down the finger on the touchpad
• Middle and right button events on the upper and lower corner of the touchpad
• Vertical scrolling (button four and five events) through moving the finger on the right side of the touchpad
• The up/down button sends button four/five events
• Horizontal scrolling (button six and seven events) through moving the finger on the lower side of the touchpad
• The multi-buttons send button four/five events, and six/seven events for horizontal scrolling
• Adjustable finger detection
• Multifinger taps: two finger for middle button and three finger for right button events. (Needs hardware support. Not all models implement this feature.)
• Run-time configuration using shared memory. This means you can change parameter settings without restarting the X server (see synclient(1)).
• It also provides a daemon to disable touchpad while typing at the keyboard and thus avoid unwanted mouse movements (see syndaemon(1)).

From Debian's description of the xserver-xorg-input-synaptics package, under that package's license.