I am trying to use the Module called Web Digital Signature developed by Serpent.

But the original module is using an Image Canvas to capture mouse and creating the signature. What I want to do is use an ActiveX that will communicate with a hardware device especially designed for capturing signature of a use as image and set as the signature in the Image Canvas of Web Digital Signature.

The ActiveX returns the image it captures for the device as a Base64 encoded string like this: data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAACWCAYAAABkW7XSAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAALNQAACzUAb........

How to do this?

I also want to disable the drawing functionality of Web Digital Signature as user should not be able to modify or create signature without the hardware device.

Thanks in advance