An agent shall not sign in blank any policy to be issued outside of such agent's office. An agent shall not give power of attorney to or otherwise authorize anyone to sign the agent's name to policies unless the person so authorized is directly employed by the agent and no other person, and the person has no office files, equipment, or address in regard to the insurance business other than those in the office of the agent. Nothing in this Code section shall prohibit an agent from authorizing an insurer represented by such agent to reproduce mechanically or electronically such agent's signature on policies, certificates, endorsements, riders, or other insurance contract documents.