To sign a certificate or consent we have several options, here we can print it directly and have both of them sign physically or sign it digitally, here we can sign it, for example if we put sign, the little screen will appear and we will be able to send the signature, In this case I already have my signature saved and I am going to use that signature or we can also scan the QR and the same screen will appear to sign for example from the phone, here I am going to use the signature that I already have saved and the same We can give it to the client printed with this signature, we can send them the code that we copy from there or they can scan the code so that they can sign, the document will appear, they will be able to read it and here they will be able to sign, once who sign it and send it to them, the document signed by both of them will appear, and the document signed by us and the client will appear, and the device on which the signature was made will appear, here we can do it Print now with both signatures, send it by email or send it by WhatsApp with the WhatsApp that we have logged into the device