A new and very much improved version of the signature add-on has been released. It originally contained an unaltered version of a third-party script, but has now been overhauled.
Options have been added into the "Field Options" for each signature field. The options include changing the height and width, naming the tabs, or even removing them.
Since a signature field should default to a signature, the drawing tab is now the default. The field to type into has been moved inside the "Type It" tab to further clean the field up, and validation removed from the script and moved into Formidable to make it more seamless. The size of the signature box will scale down depending on how much room is available for it, and display the signatures in the same size they were generated.
This update is available via auto-update from your WordPress admin.