[Business & Now Cloud] View of multiple visualisations in Adobe Reader
When the document is signed, Adobe Reader displays the validity of the document (see figure 1). The personal qualified signature is applied as the last signature in such a case. The visualisations placed in front of it are cryptographically treated with an electronic seal.
Figure 1: View in Adobe Reader
This additional cryptographic treatment of the signature images is necessary not to breach the legal validity of the applied mobile phone signature. The signer only must sign once by mobile phone signature. The cryptographic treatment of the signature is always applied to the entire document.