14. A system comprising: a first computing device that is configured to respond to voice commands while in a locked state upon receipt of a particular, predefined hotword and one or more storage devices storing instructions that are operable, when executed by the first computing device, to cause the first computing device to perform operations comprising: obtaining a value for a setting that indicates that the first computing device is permitted to provide speaker verification data to other computing devices; receiving audio data that corresponds to an utterance of a voice command that is preceded by the particular, predefined hotword, the audio data being received while the first computing device is in a locked state and is co-located with a second computing device that is also configured to respond to voice commands that are preceded by the particular, predefined hotword; while the first computing device is in the locked state, and based on the obtained value for the setting that indicates that the first computing device is permitted to share speaker verification data with other computing devices, transmitting a message to the second computing device that (i) is co-located with the first computing device and (ii) is configured to respond to voice commands that are preceded by the particular, predefined hotword; and determining to remain in the locked state and not respond to the voice command despite receiving the audio data that corresponds to the utterance of the voice command that is preceded by the particular, predefined hotword.
14. A system comprising: a first computing device that is configured to respond to voice commands while in a locked state upon receipt of a particular, predefined hotword and one or more storage devices storing instructions that are operable, when executed by the first computing device, to cause the first computing device to perform operations comprising: obtaining a value for a setting that indicates that the first computing device is permitted to provide speaker verification data to other computing devices; receiving audio data that corresponds to an utterance of a voice command that is preceded by the particular, predefined hotword, the audio data being received while the first computing device is in a locked state and is co-located with a second computing device that is also configured to respond to voice commands that are preceded by the particular, predefined hotword; while the first computing device is in the locked state, and based on the obtained value for the setting that indicates that the first computing device is permitted to share speaker verification data with other computing devices, transmitting a message to the second computing device that (i) is co-located with the first computing device and (ii) is configured to respond to voice commands that are preceded by the particular, predefined hotword; and determining to remain in the locked state and not respond to the voice command despite receiving the audio data that corresponds to the utterance of the voice command that is preceded by the particular, predefined hotword. 23. The system of claim 14 , the operations comprising: generating, by the first computing device using a speaker verification model for a user of the first computing device, a speaker verification score that represents a likelihood the user of the first computing device spoke the utterance, wherein determining to remain in the locked state and not respond to the voice command comprises determining, by the first computing device, to remain in the locked state and not respond to the voice command despite receiving the audio data that corresponds to the utterance of the voice command that is preceded by the particular, predefined hotword using the speaker verification score that represents a likelihood the user of the first computing device spoke the utterance.