1. Using digital signature: Digital signature is a method of signing electronic documents by using cryptographic technology to ensure the authenticity and integrity of the signature. Using digital signature can avoid the problem of handwritten signature and improve the security and legitimacy of signature.

2. Handwritten signature software: Handwritten signature software simulates the effect of handwritten signature, making the signature more beautiful and standardized. When using handwritten signature software, use electronic handwriting board or ordinary mouse to sign, so as to avoid scribbling or disconnection of handwritten signature.