All types of documents can be signed as long as the document is available in electronic format (PDF).  Some examples are classified by department :  Sales department: sales contract, financing request, partnership contract, quotation… Marketing/communication department: authorisation of customer communications, validation of media plan, event service provider contract, etc. Human resources: labour contract, internship agreement, IT guidelines, annual interview, validation of expense claims, etc. Finance department: audit document, invoice, grant application, etc. Legal department: confidentiality agreements, convocation, reports… Purchasing department: purchase orders, supplier contracts, specifications, etc.