digital signature
Digital signatures are cryptographic techniques used to authenticate the origin and integrity of digital messages or documents.
They provide assurance of the signer's identity and ensure that the content has not been altered since it was signed. They are utilized to validate contracts, agreements, transactions, and other electronic communications, replacing traditional handwritten signatures.
Notable companies in this industry include DocuSign and Adobe Sign, both offering digital signature solutions widely used across various sectors for secure and legally binding electronic signatures.