The Signature Device Driver is freeware and serves as a unified driver to connect with StepOver's variety of electronic signature pads (naturaSign Pad series, bluePads, blueMPads, LE Pads and +Pads) and every other Signature Devices incl. Tablet PCs that can be accessed by a Wintab Interface*. The driver either accesses the pad via USB port or a virtual com port. You may use the driver using one of its components.
* The Wintab support is not a part of the freeware version of the driver and has to be activated seperatly by the function useWintabDevices.
SOPad.c and SOPad.h