The device uses sensors that detect any hurdle and conveys it to visually impaired people via vibrators.
Looking after an elderly relative who lives alone can be a huge source of worry. But what if your smartphone could automatically alert you if your mother has stayed in bed all morning or suffered a fall? Small sensors that monitor home activity and can send alerts to smartphones are marking it easier to keep an eye on seniors from a distance, helping them to live independently for longer instead of going to a nursing home. The products on display at the Mobile World Congress, the world's largest mobile phone fair in…