Fitbit for the blind: Echolocation-based smartwatch aids sightless steps

Enlarge (credit: Sunu) As some Fitbit wearers find amusing ways to skip steps—attaching the devices to hamster balls, ceiling fans, and power tools—a new wrist gadget aims to make sure others never miss one. The Sunu band smartwatch, designed for people with visual impairments, uses a sonar sensor to detect objects and people within a […]