There are many different ways to sign documents. However, these different possibilities are not always equivalent. For instance, there are some differences in legal security between different types of signatures. In this guide, you will learn what you need to take into account when signing documents and PDFs and how to sign PDFs securely.
When digitally signing PDFs, the qualified electronic signature offers the highest level of security among the digital signature methods due to the legal and strict requirements it has to fulfil.
For example, the electronic signature must belong to a specific person, show whether data in the document has been changed after the signature has been applied and it must be possible to trace who set the signature. In addition, the person must have his or her identity validated before the signature is applied to the document. All these criteria determine the high security of digitally signing a PDF with the qualified signature.
In contrast, signing a PDF with the help of a touch screen or by inserting the signature into a PDF is not very secure, as in this case no security procedures or legal requirements are used as with the qualified electronic signature.