A new app that gives sight to the blind

 Massachusetts firm has developed a screen reading app for iOS devices that detects and reads any text aloud, and costs a relatively cheap $99 (£60).
The KNFB Reader app is capable of scanning for text – even within images - and converts it into speech automatically.
The $99 (£60) app is available for the iPhone 5 and above, running iOS 7 and higher.
When a user wants to read text, they hold the device above the piece of paper, over the advert or at a shop window, and the app will scan for writing.
Once it detects text and is the best position, it will take a photo of it. 
This photo is then decoded and the speech begins almost instantaneously. 
It supports English, French, German, Dutch, Italian, Spanish, Portuguese, Danish, Finnish, Swedish, and Norwegian - and works with all Braille displays supported by VoiceOver on iOS