In other words: is strictly less useful than a "fake analog signature" script that uses imagemagick to paste a PNG/SVG with a signature (or a random one from a directory of signatures) on the last page of the document, and then to apply some or all of random {sub-2deg rotation, tiny gaussian blur, tiny non-linear transform, color threshold, strong desaturation}, to make it seem like the document was printed out, signed, and scanned back.
I skip the script and (if they bother asking) tell people I have a really good scanner, a really good pen and am incredibly consistent with my signature even when I sign totally different sizes.
It's like a gadget in Europe then.
But still, it is useful.
It can be used if you want to ask your daughter to promise to "Get good grades at school" in exchange for an extra Christmas gift, for example.
And make it look like official.
It's like pretending to be signing.