I use this and LOVE it…

This app works very simply and easily. I use it all the time to sign reports within my professional practice. Using my track pad, the signatures are smooth and very much my signature. Saving signatures is in fact very possible. In Properties >> Export signatures can be automatically inserted into current application and/or copied to desktop. Moreover, this app is programmable by applescript. I use this with Filemaker to add real signatures to files and client session notes. Click into a signature field, triggers applescript and up pops autograph. Sign and it is imediately inserted into the signature field. Also works well with Pages and PDFpen (not so much with preview). I love that this app provides a real signature, not a copied and pasted image. Simple and effective. Works for me on Mountain Lion. (version 10.8.3) Get it...

Nuos about Autograph, v1.2.1