1. A computer-implemented method, comprising: identifying, by a mobile computing device, an identity of a person that is speaking into the mobile computing device; selecting stored biometric information associated with the identified person; determining, by the mobile computing device, that the identified person has stopped speaking into the mobile computing device based at least on the selected biometric information associated with the identified person; and generating a transcription of the person's speech into the mobile device in response to determining that, based at least on the selected biometric information associated with the identified person, the identified person has stopped speaking into the mobile computing device.