Crooks, terrorists and liars can be hard to spot. But some researchers hope that scanning brains, faces or voices might reveal deceivers. Jonathan Knight looks at lie-detection technology, and wonders who is being fooled. When talk-show hosts and death-row inmates come knocking on his door, neuroscientist Lawrence Farwell welcomes both with open arms. Far-well is the inventor of a brain fingerprinting machine, and since he began consulting in high-profile murder cases four years ago, he has found no shortage of publicity for his technique. In March alone, Farwell featured in a Public Broadcasting special and appeared on ABC's Good Morning America and CNN. "They come to us," says his public-affairs manager. "All I do is sit here and field phone calls."
展开▼
