Last Updated Oct 26, 2007 9:27 AM EDT
The author uses Photoshop to accomplish all this, but you can achieve the same results with open-source favorite GIMP (a robust image-editing program) or any image editor that supports transparent backgrounds. Be sure to check the comments below the post, as several readers have chimed in with recommendations for signature-scanning success.
At this point you're probably wondering about security: What if someone stole or hacked into your PC and found the signature file? That's a risk, but you can easily work around it by password-protecting the file and giving it an innocuous name, like 2007quarterlystats.jpg.