DIGITAL SIGNATURE

• Simple Electronic Signature (SES):Considered the most basic, these do not require strong ID verification or signer authentication. Uploading a scanned image of the signature, or checking a box to indicate consent of agreement or acknowledgment is sufficient to authenticate the transaction. Most common examples include standard e-commerce purchase transactions or any simple form that needs signing
• Advanced Electronic Signature (AES):These signatures reliably identify the signer and establishes a link between the signer and the signature. In AES signatures, signers are asked to produce a unique access code during and after the signing process and use a valid document to confirm their identity. When the signer sends the signed document, a Certificate Authority (CA) issues a certificate authenticating the electronic signature. AES uses a PKI (public key infrastructure) digital signature technology to satisfy the requirements for an electronic seal approval. A common example is candidates accepting offer letters from companies after receiving a pin or code from HR and sending back the signed document with a scanned copy of their valid ID like a driver’s license
• Qualified Electronic Signature (QES):These are one step above AES. They offer the highest level of trust by meeting additional requirements outlined in regulations like eIDAS, ESIGN, and others. A QES is issued only after a third-party CA gives prior identification of the signatory remotely via video chat or in person. Such signatures are bound using a multi-step procedure based on double-factor verification and encrypted keys.

For more information: https://rsign.com/glossary/digital-signature