Smart locks have a notable inconvenience: running out of power. Lockin, maker of vein-recognition locks, debuted its newest ...

Former Xinjiang government engineer Nureli Abliz, who saw firsthand how surveillance technology flagged thousands of people in China for detention, even when they had committed no crime, is ...

Researchers demonstrate the conversion of infrared images to the visible, using ultrathin and transparent semiconductor nanocrystals. The demand for detecting infrared (IR) light, invisible to human ...

When you unlock a phone, step into view of a security camera or drive past a license plate reader at night, beams of infrared light - invisible to the naked eye — shine onto the unique contours of ...