In some implementations, a single registration utterance that includes a hotword and an introduction declaration is received. A user is registered, including training a text-dependent speaker identification model using the hotword of the single registration utterance and training a text-independent speaker identification model using the introduction declaration of the single registration utterance. An authentication utterance by the user that includes the hotword and a voice command that is different from the introduction declaration is received. The user is authenticated, including processing the hotword of the authentication utterance using the text-dependent speaker identification model and processing the voice command using the text-independent speaker identification model. Access to an access-controlled personal resource of the user is provided without requiring the user to submit any further authentication information other than the single registration utterance by the user that includes the hotword and the introduction declaration to the speech-enabled home device.