A data processing system to customize content in a voice-activated system, comprising: an interface of the data processing system configured to: receive a location of a first client computing device associated with a first user, the first client computing device associated with a first audio identification model for the first user; and receive an input audio signal from a second client computing device associated with a second user, the second client computing device associated with a second audio identification model for the second user; an authentication component executed by the data processing system and configured to: determine that the location of the first client computing device is within a predetermined distance to the second client computing device; provide, based on the determination that the location of the first client computing device is within the predetermined distance to the second client computing device, access to the first audio identification model, of the first client computing device, for processing of audio signals received by the second client computing device; generate, from the input audio signal received from the second client computing device, a first identification score, for the first user, using the first audio identification model and a second identification score, for the second user, using the second audio identification model; and select a profile of the first user from a plurality of candidate profiles based on the first identification score and the second identification score; a content selection component to select a digital component based on the profile of the first user selected from the plurality of candidate profiles; and wherein the interface is configured to transmit the digital component to the second client computing device in response to the input audio signal received from the second client computing device. an interface of the data processing system configured to: receive a location of a first client computing device associated with a first user, the first client computing device associated with a first audio identification model for the first user; and receive an input audio signal from a second client computing device associated with a second user, the second client computing device associated with a second audio identification model for the second user; receive a location of a first client computing device associated with a first user, the first client computing device associated with a first audio identification model for the first user; and receive an input audio signal from a second client computing device associated with a second user, the second client computing device associated with a second audio identification model for the second user; an authentication component executed by the data processing system and configured to: determine that the location of the first client computing device is within a predetermined distance to the second client computing device; provide, based on the determination that the location of the first client computing device is within the predetermined distance to the second client computing device, access to the first audio identification model, of the first client computing device, for processing of audio signals received by the second client computing device; generate, from the input audio signal received from the second client computing device, a first identification score, for the first user, using the first audio identification model and a second identification score, for the second user, using the second audio identification model; and select a profile of the first user from a plurality of candidate profiles based on the first identification score and the second identification score; determine that the location of the first client computing device is within a predetermined distance to the second client computing device; provide, based on the determination that the location of the first client computing device is within the predetermined distance to the second client computing device, access to the first audio identification model, of the first client computing device, for processing of audio signals received by the second client computing device; generate, from the input audio signal received from the second client computing device, a first identification score, for the first user, using the first audio identification model and a second identification score, for the second user, using the second audio identification model; and select a profile of the first user from a plurality of candidate profiles based on the first identification score and the second identification score; a content selection component to select a digital component based on the profile of the first user selected from the plurality of candidate profiles; and wherein the interface is configured to transmit the digital component to the second client computing device in response to the input audio signal received from the second client computing device.