Which one of the following statement is not correct for digital signature.
It is the scanned image of ones' signaturs statement is not correct for digital signature.
Depending on the nature of the document being signed, an electronic signature in the form of a scanned image of the signer's hand written signature is considered to be legally binding in most countries, but does vary by country and at state levels.
The only difference is that an electronic signature is digitized but it is also used to verify a document. On the other hand, it can be observed that a digital signature is comprised of unique features such as fingerprint that are used to secure a particular document.
The most significant issue, with signature of a faxed or scanned document, is whether it can be proven that the party, which purportedly signed the contract, did in fact sign it. Since the parties were not together at signing, fraud is somewhat more likely than when original contracts are signed together.
A digital signature is a mathematical technique used to validate the authenticity and integrity of a message, software or digital document.