Signature Pad is part of KWizCom Modern Forms (Enterprise edition).
With the Signature Pad column you can add drawing & signing capabilities to your modern SharePoint lists and libraries.
After you add the Signature Pad column to your list/library and configure its properties, authorized signing users will see the Signature Pad in the KWizCom modern forms. Here's how it looks in the New Item form:
This will open the Signature Pad settings page:
Who can sign?
Specify who can sign the Signature Pad column:
Select columns you wish this signature to verify. The signature will become invalid if these columns change since it was signed.
Select an image as the background for this signature pad. The signature pad will match the image size. By default the standard "Sign Here" background image is selected and its preview displayed on the right side of the page.