The invention of tiny devices capable of precisely controlling the direction and behavior of light is essential to the ...

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 ...

Smart locks are becoming increasingly popular for their convenience and security benefits. But they are not popular for the hassle of keeping the batteries full. That requires either swapping out ...

The Dragon Dome LED SFH 4783 uses a focused beam high-power infrared LED (IRED) to achieve a range of more than 100 m for security surveillance. It measures 11 x 6 x 5.7-mm and does not need an ...

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 ...