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Selecciona o arrastra y suelta el PDF en el cuadro de arriba y, a continuacion, crea tu firma electronica con el panel tactil o el raton. Cuando termines, aplicala In this short guide, I will show you how to apply a digital signature to a PDF Certificates for digital signatures are normally issued by a limited number of Feb 22, 2017 - Feb 13, 2018 - Nov 20, 2017 - Mar 6, 2018 - May 27, 2019 - Is there a way to prevent a PDF document's content from being altered after it is signed with a digital signature pad? Steps I have successfully taken so far: 1.Ponemos a su disposicion un documento con las instrucciones para firmar y validar una firma en Adobe Acrobat Reader DC. Firmar un documento PDF