The legally recognized electronic signature
When collecting offers or orders off-line it is possible to use the client electronic signature with graphometric identification, as expected by the Digital Administrative Code, responding to the identification’s conditions. (www.graphosign.com)
The graphometric collection can be extended to other documents when it will be necessary to define authenticity.
Alternatively, it is possible to place a digital signature at the end of the generated PDF document; however, it will not have legal value.