Prevent image been recognize as past

HI I am new here.. Hope this is the right place to ask this...
I have a documents and I need to put my signature.. however I put it digital, Not important documents.. However the other party find is digital...
How can I prevent to them that is digital??? I have Acrobat Pro XI .. I don't want to print and print to much waste paper...
Hope you understand my question and Is correct to ask here...
Thanks in advance ... I appreciated...

 

If you're asking "how can I sign (with a pen) a digital document", you can print it, sign it and either send or scan and email it.

If you're asking how you can digitally sign a document so it's legally binding, there are online (secure) services for this.

 

Ok.. thanks for your respond .. Yes .. that's what I been doing.. is wasting paper ...however I appreciated your suggestion is good..
Now I put my signature as copy and paste converted in PDF from word... now they know is digital.. so I back to my document and try to find out how they find it..
well if you put the mouse over the signature or picture or whatever is paste you see the PDF shows as blue square as the size of the picture or what ever... well I think is no way to prevent this... Put mouse over and find out is paste... that's another question... thanks so much..

 

Paste your signature on the document, then highlight the entire thing, save it as an image (screenshot/paste if you have to) and put THAT into your reply instead of just adding your signature. The whole page is an image, instead of just your signature.

I suspect it would mess with things at their end, but it's much the same as sending a scanned copy of a signed document.

 

That's my friend is a great idea... thank so much !!! as always I appreciated