VM PIN when calls go out using VM Notify

When messages are received into a mailbox, and the system then dials a number to deliver the message, there is no PIN request when the remote phone answers. This means anyone could potentially get messages if they answer that phone. This could be a very big problem for doctors, lawyers, accountants, etc, where confidential info might be left on voicemail and heard by the wrong parties. The liabilities could be huge. Sure would be nice if we could get that option in there.