How to catch touch drag (Android)?

Hey, how can I get the drag vector of the current touch move?
There is no Drag Input available in the Project Settings, and I want with the touch to control movement.

Has anyone an answer?

Did you ever find an answer? I got around the basic problem by calculating my own. However to save battery power I drop frame rate when its not needed, and want to see if there is a hardware based delta I can use to get around some problems with the delta code in low frame rate mode.