The Scriptel ST1476 EasyScript signature pad has been tested to work with TaxSlayer Pro. To use the pad you will need to download and install the ScripTouch Toolbox here.
Once installed, inside the Toolbox click the Output tab and ensure ProScript Mode is selected:
Do you use both TaxSlayer ProWeb and Desktop?
If you use both TaxSlayer ProWeb and Desktop you also need to download and install ScripTouch Sign and Save. See here for more information about using the Scriptel signature pad with ProWeb.