If you wish to use Wacom signature pads for electronic signatures you need to install both WACOM SDK and WACOM pad drivers. Drivers for WACOM STU pads are included in WACOM SDK already so you don't need to install any additional drivers.
Drivers for the other Wacom pads have to be installed separately and can be downloaded here on Wacom website…
Please make sure your WACOM pad is connected to your PC/ laptop before starting the installation.
Use flowing links to download required installation files: