If you are using the Gravity Forms plugin on your WordPress site and you are using the Signature field then you may be facing the same issue we did, when the field did not load or function at all. We found a solution…
What We Did
We looked into what source was being output onto our pages and realised that the field was being 50% built. A lot of attributes and necessary mark up was missing. We looked to make sure that the necessary JS files were being referenced, and they were. At this point we were a little stuck.
After a little experimentation, we realised something…
… The JS file was being called too far down the page. All we had to do was move the reference further up our template, and perfect! It works!