Biometrics
LONDON - Did their voices betray them? The discovery of an alleged terror plot against Europe owes at least some of its success to "voiceprint" technology that allows law enforcement to electronically match a voice to its owner.
DES MOINES, Iowa - A Baltimore inmate who bluffed his way out of prison probably wouldn't have tricked guards if they had eye-scanners such as those being installed at dozens of jails nationwide.
LONDON - Around the world, watch lists are a key tool against terrorism - but highly imperfect.
