A method and system for persona authentication includes obtaining from a server a presence list of devices at a location, refining the presence list according to a user profile of the devices thereby forming a dynamic presence list, capturing at least one biometric input from at least one of the devices, authenticating a persona of an individual at the location according to the biometric input and the user profiles in the dynamic presence list, and presenting at least one descriptor of the persona of the individual. In one embodiment, voice authentication uses a centralized voice id database service in conjunction with a Bluetooth 4.0 UUID service to obtain multi-modal biometric user data.