In accordance with aspects of the inventive concepts, a system and method provide ongoing authentication through processing of data that includes biometric data. Such systems and methods can use, as examples, face recognition and/or voice biometric data, or other biometric data, to identify the user in real-time and thereafter during an ongoing session. In various embodiments, the system can continuously or repeatedly authenticate one or more users using biometric data to control access to information and/or functions in real (or near real) time. The system can be configured to optimize and/or minimize resource consumption associated with the ongoing authentication process.