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On 2015-09-11 03:06, avamk wrote:

I think this is a rather outdated procedure, but I've come across cases
where I am required to include a scanned image of my handwritten signature
in a word processing document to "sign" it. Just to be clear, I am not
talking about signing with a certificate, but rather an image of a
handwritten signature inserted into the document.

I am always scared of doing this, because what if an adversarial entity gets
ahold of the document and starts using my signature for nefarious
purposes??? So, is there a way to make this document (say, a .odt or .docx
file) more secure that problem won't happen? Ideally I'd like to minimise
complications/troubles when the receiver opens the file.

Thank you!
Anyone who can view the document can take a screen snap (clip) of your signature image and use it as they like. The security issue is more likely uncontrollable at the receivers end. Are you suggesting something like a pass phrase required to open and view a document, you can do this by just encrypting the file and emailing with something like Enigmail.

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