Ming-Zher Poh form the Harvard-MIT Division of Health Sciences and Technology presented a Medical Mirror, which is a novel interactive interface that tracks and displays a user’s heart rate in real time without the need for external sensors. Currently, collection of physiological information requires users to strap on bulky sensors, chest straps, or sticky electrodes. The Medical Mirror allows contact-free measurements of physiological information using a basic imaging device. When a user looks into the mirror, an image sensor detects and tracks the location of his or her face over time. By combining techniques in computer vision and advanced signal processing, the user’s heart rate is then computed from the optical signal reflected off the face. The user’s heart rate is displayed on the mirror, allowing visualization of both the user’s physical appearance and physiological state.