Javascript for "apply ink signature"?

Is there a way to use javascript to direct a signature field to only allow an ink signature for that field?  The PDFs I'm trying to create for my work only need to have the ink signature that we'll be obtaining from clients who will sign on a tablet pc, so I was wondering how to make it the only option since using an ID seems to be the default. I don't have a lot of experience working with PDFs so if anyone can give me any advice or point me in the direction of a good tutorial it would be appreciated as my searches don't seem to be yeilding good results for me today.

Hi,
Prepare to dive into the deep end of the geek pool...
I guess it all depends what you mean by an "ink signature". If you mean a biometric digital signature then you can force the use of the biometric signature handler by assigning a seed value to the signature field. If you are talking about applying a stamp that was created from a scanned image of a signature, then no. As a bit of background, when in the Forms Create or Edit mode, and you are adding a Signature field, it really means a digital signature. Applying digital signature is a cryptographic operation and requires the use of Public-Key Certificate or a biometric capture device (e.g. a signature capture device like you see when using a credit card in a store) and not just a stamp.
However, if you are using a public key certificate you can force the use of a named signature appearance (again via the use of a seed value), and as long as you get Acrobat/Reader set up with the correctly named custom signature appearance you can force the user to use that appearance. If the appearance is composed of a signature image (not unlike how you create a custom stamp) then you can get the digital signature to look like it was signed with an ink signature.
And if you are interested in how to apply a seed value it's done using JavaScript and the built-in JavaScript console in Acrobat Professional.
Yeah, I know it all sounds like a foreign language.
Steve

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