Creating a .pdf that someone can sign digitally

Question

Where I work we FAX out hundreds of drawings per year for customers to sign.  These are 8.5" x 11" documents usually between one and five pages.  Is there anyway to create a .pdf that that has some kind of signature line or signature button that the customer can click to indicate approval of the drawing?  This would alleviate the need for both the original FAX and for the customer's return FAX.  I know how to create the .pdf but don't know how to put in a signature option.
We are using Adobe CS3.  We also have Adobe Acrobat 9 and LiveCycle Designer ES2.
Thank you.

Answer 1

With Acrobat 8 (Pro or 3D) or Acrobat 9 (Standard, Pro, Pro Extended) you can "Reader enable" a PDF.
One thing this provides is that users of Adobe Reader (back to, I think, Reader 7.(something)) can use the Comments & Markup tools.
So, you send me this PDF of a drawing. It is "Reader enabled".
I use Adobe Reader (knowing "good tools" is "good business", I'm using Reader 9 - fully updated <g>).
I open the PDF. I add a "Sticky Note", maybe add some text, and use the Options drop-down to go to Set Status > Review > Accepted.
Maybe I get fancy and go into the Sticky Note Properties to change the "appearance" from the default "Comments" to one of the other icons available.
You get the annotated PDFs back. Perhaps an individual PDF has more than one annotation.
Open the Comments List. Looking over the Tool bar for this you will see that you can show/hide/sort and output PDF reports.
Of course, a small learning curve is involved.
Pay off is that the turnips go to market via a truck versus a horse drawn cart (fax).  8^)
Be well...