1. If a lawyer needs the client to sign a document or contract when representing the client's legal affairs, he shall sign it in front of the client or in the knowledge of the client. If the client can't sign in person, the lawyer should take other legal means, such as entrusting an agent to sign or using electronic signature, to ensure the authenticity and legality of the signature.
2. If a lawyer forges the client's signature in the legal affairs of representing the client, it will violate the law and professional ethics and may face legal responsibility and professional punishment. Therefore, if you suspect that a lawyer has forged your signature, you can complain to the relevant departments or bar associations to safeguard your legitimate rights and interests.