Top CEOs are obsessed with this $300 Oura Ring that tracks sleep and health metricsFitness trackers like Oura Ring focus on sleep data for well-being insights, resonating with users and selling over 2 million units.
NTT Data to record hotel guests sleeping and sell that dataNTT Data has opened a hotel where it plans to collect data on guests' sleeping habits.The company will use sensors and Fitbit devices to analyze sleep and offer personalized advice.