A method and system for authenticating a service to access data respective of a user on a low-end mobile device. The method includes sending, from a telephone-to-web adapter, a first authentication token over a first communication path to the low-end mobile device, wherein the telephone-to-web adapter is a separate entity from the low-end mobile device; receiving, at the telephone-to-web adapter, a second authentication token over a second communication path, wherein the second authentication token is received from a host server hosting the service, wherein the first communication path is performed with a first method of communication and the second communication path is performed with a second method of communication; comparing, at the telephone-to-web adapter, the first authentication token to the second authentication token; and allowing access to data upon determining that the first authentication token matches the second authentication token.
