The digital signature is - as the name suggests - an electronic signature and has the same function as a hand-written signature. In daily life signing documents or contracts is a reliable and commonly accepted procedure. Today however more and more business transactions are conducted via public networks. The goal is to improve the efficiency of business processes between partners. As one does not see the partner 'in persona' anymore, the necessary integrity, authenticity and reliability have to be implemented digitally.
The digital signature allows to keep track of who signed at a given time which document. It also guarantees that there have not been any subsequent changes after the signature of the document.
For all our documents that are digitally signed and used for external communication (quotations, orders,...) PDF/A will be used as a standard. PDF/A is a specific variant of PDF that allows long-term archiving and support digital signatures.