Enabling and disabling login access to a web-based application by examining automatic number identification (ANI) information from a received telephone call, associating the ANI information with a user account, determining a current state of login access to a web-based application for the user account, the state of login access being one of enabled and disabled, and notifying the web-based application to change the state of login access to the other of enabled and disabled depending on the then-current state of login access. The methodology may further include examining dialed number identification service (DNIS) information of the received call to determine which of the enabling or disabling actions to take, and/or to determine which of a plurality of accounts is to be effected by the desired change in state of login access.