On February 10, 2026, students participating in the M.Sc. lecture Engineering Interactive Systems: AI & Wearables offered by Dr. Martin Feick and Dr. Felix Kretzer from the human-centered systems lab presented the results of their capstone projects projects in the KD2Lab. The capstone project was carried out in cooperation with Visualvest GmbH, a fintech subsidiary of the Union Investment Group. Students leveraged Polar H10 wearable chest strep to capture heart activity in the form of heart rate variability features, analyze and recognize stress levels and on this basis design an biosignal-adaptive investment banking app prototype extending the existing Visualvest mobile app. In the lecture and the associated capstone project we teach students in engineering interactive systems with dedicated focus on biosignal-adaptive systems. This research-oriented teaching activity is closely connected to the DFG-funded research training group KD2School.