Ingmar Ellenberger authored Dec 17, 2006 and Peter Osterlund committed Dec 17, 2006

A new parameter, EmulateTwoFingerMinZ, makes the driver emulate
2-finger scrolling (and tapping) when the finger pressure is big
enough. This is no real multi-finger detection (the ALPS hardware
can't do that), but seems to work quite well in practice.

From Ingmar Ellenberger.