If you want to sign a document occasionally you can use a PDF certificate on a (USB) PKI token. To sign a document you'll also need signing software and a USB-port.
Trusted by default
Signing with this certificate guarantees the origin and content of a doucment. The certificate is included in Adobe's AATL program and is therefore automatically trusted in Adobe Reader. The signature complies with PAdES. Ensured e-Sign is an advanced electronic signature (AES) as described in Article 3 under 10 and Article 26 of the eIDAS Regulation. The department-specific Ensured e-Seal is comparable to an electronic signature but is used by legal persons and not by an individual person. An eSeal is similar to an electronic signature but is used by legal persons and not by an individual person.
The longer the validity, the higher your discount.