This application allows you to digitally sign pdf documents using the DNIe 3.0 or higher or a digital certificate. Once the document is signed, you can easily share it by email, whatsapp, telegram or any application that you have installed on your device and allows you to share documents. In order to use this application with the DNIe, it is necessary to have the electronic DNI 3.0 or higher and a mobile device with the Android operating system and NFC technology. It is also possible to use a