Wearable tech uses machine learning and signal processing to provide data-driven mental health therapy

Often, when Feel detects an emotion, the app will ask users to describe what's happening and how they feel. That feedback serves three purposes: It helps the algorithm improve, it provides the therapist with richer information, and it prompts journaling, which brings greater self-insight. Chryssoula says the app "challenged me to be specific and analytical in the ways of improving myself, my negative thoughts, and my circling fears." The app might also suggest one of several exercises. For example, users might be asked to recall the key message from their last therapy session and describe how they plan to use that takeaway in their daily lives.