People often confuse digital signatures with electronic signatures. Do you need a digital signature or an electronic signature? We’ll cover definitions, explain technical infrastructure, and give you a step-by-step guide for securely approving those crucial documents. In this post, you’ll learn everything you need to know. Important business documents like contracts, proposals, invoices, and others are most commonly shared as PDFs. In other situations, they’re essential for guaranteeing non-repudiation and eliminating the possibility of tampering. Some countries, like the United States, require digital signatures in certain circumstances. Digital signatures are the most secure document approval option available to companies.