The nation's top telecom carrier is developing a simple wristwatchlike device to monitor the well-being of the elderly.
The wearable sensor from NTT Corp., shown this week, is part of a growing effort to improve care of the old in a nation whose population is aging faster than anywhere else.
The device, worn like a watch, has a built-in camera, microphone and accelerometer, which measure the pace and direction of hand moves, to discern whether wearers are brushing their teeth, vacuuming or making coffee.