What is the definition of an electronic signature according to the ESIGN Act?

Electronic signatures are symbols attached to a document that confirm the validity of the signor’s intent to sign under the ESIGN Act. MSB Docs users receive legally-binding eSignatures that can be traced back to a signer (contains a digital trace including a timestamp and ID) and demonstrate a clear intent to sign. Any document, contract, or agreement signed with MSB Docs is enforceable in the United States and the European Union.