1. A method for restricting access to a call management system, the method comprising: registering a user of the call management system in an institution, the registering including: receiving a first image from the user via a camera; verifying the first image is indicative of a face using image recognition; and associating the verified first image with the user; and storing the verified first image in a database; and authenticating a call access attempt by the user, the authenticating including: receiving the call access request by the user of the call management system; prompting the user for a second image; determining whether a visual characteristic of the second image is a statistical match to a visual characteristic of the stored verified first image; and allowing or rejecting the call to proceed based on the determination.