Abstract: A chest-worn sensor device, such as a device for daily at-home monitoring of cardiopulmonary health conditions, includes an audio and/or visual interface that provides cues to assist a user in performing a measurement sequence. The sensor device may detect whether there are any body posture issues or device contact issues. In response to detecting an issue, the sensor device provides and audio and/or visual cue to the user indicating the issue. The sensor device may provide additional cues throughout the measurement sequence, such as a cue that a measurement is being taken, a cue for the user to change body posture, and a cue for the user to remove the sensor device.