SmartCane helps blind people detect obstacles
Robotics researcher and inventor Dr Rohan Paul has developed a smart navigation cane for the visually impaired which uses ultrasonic waves to detect obstructions that fall above the waist. Called SmartCane, the device costs ₹3,500 and is used by over 10,000 people across India. Notably, the traditional white cane cannot detect obstacles that fall above the waist.