Image 2 (IMAGE) Nanyang Technological University Caption The NTU-designed system records light patterns caused by the reflection of a laser beam, which it then uses to generate a series of random numbers. Credit NTU Singapore Usage Restrictions Credit: NTU Singapore License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.