Simple 'smart' glass can tell images apart without needing power

Scientists have created pieces of'smart' glass that they say can recognise images without requiring any sensors, circuits or power sources. Tiny strategically placed bubbles and impurities embedded within the glass bend light in specific ways to differentiate among different images, experts say. To test out the idea, researchers created glass squares that can differentiate between lit up numeric figures from 1 to 9. The breakthrough could lead to a number of new frontiers in the field of low-power electronics, they claim. That includes facial and other image recognition technologies being built into the materials used to make smartphones and other gadgets. Scientists have created pieces of'smart' glass they say can recognise images without requiring any sensors, circuits or power sources.