A tiny metasurface chip can turn invisible infrared light into steerable visible beams, opening the door to powerful new ...

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 ...

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 ...

The BBA-4000 is a solar powered wireless infrared break beam system that is simple to install and requires no wiring. The break beam sensors are powered by lithium ion batteries that are recharged ...

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 ...

After decades of intense research, surprises in the realm of semiconductors—materials used in microchips to control ...