What is digital signature? Differentiate between Physical and Digital Signature

What is digital signature? Differentiate between Physical and Digital Signature

A digital signature is an electronic analogue of a written signature; the digital signature can be used to provide assurance that the claimed signatory signed the information. Digital signature is used to detect the integrity of signed data. We can differentiate between physical and digital signature as:

i. Physical signature is just writing on paper but digital signature includes crucial parameters of identification.

ii. Physical signature can be coped but it is impossible to copy a digital signature.

iii. Physical signature does not give any privacy to content but digital signature enables encryption and thus privacy.