1. A method for providing authentication in a network, comprising: receiving a request for eye-scan authentication from a mobile endpoint device of a user, wherein the request comprises a first retinal image of the user captured using an adaptive liquid lens and a second lens of the mobile endpoint device, wherein the first retinal image of the user comprises a near-field image; obtaining a second retinal image of the user, wherein the second retinal image is a stored retinal image of the user; and authenticating the first retinal image against the second retinal image.