Smartphones are offering more and more to their users. It seems almost impossible to keep up with the pace of development and every new 'groundbreaking' app.Some inventions are less useful, but some can literarily change lives. So far, the visually impaired have not really been able to make the most of their phones. They have been using overpriced and inefficient products to help them, such as voice guidance. This is what motivated Indian innovator Sumit Dagar, who has spent the last three years working on the world’s first Braille-based smartphone.His 'Dagar' phone is equipped with a touch screen that creates braille impressions. The phone uses innovative memory-alloy technology, with metals expanding and contracting during use. The grid of pins on its display move up and down, representing certain characters or individual letters, forming patterns in braille. It allows the blind to easily read text and emails.Dagar device is currently being prototyped, and will hopefully soon reach the masses, allowing anyone to make the most of new technologies.