Which of the following is NOT a requirement for federal agent credentials?

The requirement for federal agent credentials is focused on identification and authentication. Federal agent credentials typically include a clear picture to visually confirm identity, a signature for verification purposes, and a seal of the agency which authenticates the document and establishes authority.

A personal phone number is not a standard requirement for these credentials because it does not pertain to the identification or official capacity of the agent. Including a personal phone number could introduce privacy issues and is not necessary for the function of the credential itself. Therefore, while the other elements serve to establish the agent's identity and authority, the inclusion of a personal phone number is not relevant to the formal verification process required for federal agent credentials.