I'm looking for information, justification related toutilizing controlled acces sysstem to banks (Customers having to be "buzzed' inside). Anyone have any experience along those lines? What type of policy changes were necessary? Does anyone know of a specific bank that employs this method?

Are you looking for something that restricts access to an entire branch, or just specific office areas?

The entire retail bank/branch.

Is this being done to address robbery concerns?