1, different media: digital signatures use electronic documents and digital technologies, while handwritten signatures are traditional paper documents and physical signatures. Digital signatures can be easily created and verified on computers or mobile devices, while handwritten signatures need to be signed in person on paper documents.

2. Security and verification methods are different: digital signature adopts encryption technology to ensure the authenticity and integrity of electronic documents and prevent them from being tampered with or forged. Digital signature provides non-repudiation, that is, the signer cannot deny his signature. Handwritten signature is mainly verified by personal writing habits and handwriting characteristics, which is low in security and easy to be imitated or forged.