Devices that integrate cues like voice patterns, breathing patterns, and sleep quality can signal an impending depressive episode.

“Um, basically what these are, these are devices that are listening to people talk all day. They're also paying attention to patterns of breathing and how well people slept, etc. integrating a a huge number of cues and then signaling somebody with a, you know, a yellow light, you know, you're headed into a depressive episode and the person might say, "I feel fine or I feel pretty good. This is kind of baseline state for me." and they say, "Uh-uh, this is where you were preceding the last episode that took you down a deep, dark trench and it took months to get out of."”