FraSen (프라센) has developed a smart mask, ‘Sleep Sense’, which helps users to relax and fall asleep faster through low frequency binaural beats and music, as well as brainwave monitoring. The company also provides a mobile application for the analysis of sleep data with AI, which helps users to understand and improve their sleep. Sleep data is compared and analyzed in context with the user’s location, temperature, weather, humidity, and other factors to provide personalized feedback.