Biosignal sharing is a way to convey our emotional states, internal experiences, and activities, which could potentially make us not only individually more aware, but also enhance our ability to understanding collective emotions. While wearable research has advanced on the techniques for processing and acquisition of biosignals, it is unclear how such systems could work in real-life scenarios, unobtrusively, and at scale. We present a wearable-based biofeedback system for processing physiological indicators from consumer-grade devices, and visualizing the emotional state of a group of people in an abstract and playful way.