Biometrics, smartphones, surveillance cameras pose new obstacles for US spies

Espionage looks very different in the 21st century. Almost everyone leaves traceable digital dust across the internet. Gone are the days where spies were like James Bond or Jason Bourne, travelling around the world undetected with a pocketful of aliases. Now, they have a new, omnipresent enemy that constantly keeps tabs on their location: artificial intelligence. Warren P. Strobel examines these new obstacles the CIA have to overcome, and how the art of spying has evolved to keep up with modern technology.