Hidden cameras can be disguised as every day items like speakers, alarm clocks, USB chargers and power strips. We tested four hidden-camera detectors to see which ones could actually find concealed ...

ORLANDO, Fla. — Hidden cameras: it’s something one Central Florida sheriff and one security expert wants people to be aware of with the summer travel season upon us. Both experts said these devices ...

Semiconductor detectors that directly measure the electrical signals produced by X-rays have hugely improved the resolution and contrast of computed tomography scanners. In the 1970s computed ...