Multi-touch refers to a touch sensing surface's (trackpad or touchscreen) ability to recognize the presence of two or more points of contact with the surface. This plural-point awareness is often used to implement advanced functionality such as pinch to zoom or activating predefined programs.
Is there a way to "bind" onscreen touches to a keyboard/ game controller? The same way sixaxis controller allows Bluetooth controllers to use touch emulation. Either within bluestacks or windows.