Will the subscriber meet face-to-face with the ETA to receive their token?

The correct answer indicates that the subscriber will indeed meet face-to-face with the ETA (Enrollment and Token Authority) to receive their token. This scenario is often applicable in contexts where security is a high priority and requires verification of identity beyond just documentation, such as in banking, government operations, or systems with stringent authentication requirements.

In a face-to-face meeting, the ETA can confirm the identity of the subscriber in real-time, allowing for a direct and personal verification process. This method minimizes the risk of impersonation and ensures that the individual receiving the token is indeed the intended user. It also allows for immediate resolution of any issues related to the token issuance and provides the subscriber with an opportunity to ask questions and gain understanding about the proper use and management of their token.

Other alternatives such as meetings on request, online meetings, or not meeting at all may not provide the same level of security and personal verification that necessitates physically meeting the ETA. These methods could potentially leave more room for misunderstandings or security risks regarding identity verification. Thus, the face-to-face interaction solidifies trust between the parties involved and increases the overall security of the PKI system being implemented.