The Washington Post details the difficulty law enforcement agencies such as the FBI are having with the new VOIP (voice over internet protocol) phone systems. Basically, the calls are made over the internet using broadband connections instead of the traditional phone lines. Since there is no 'wire' for authorities to 'tap' into, they have yet to find a successful way of monitoring or tapping phone lines. If I were Osama Bin Laden I'd just use this instead of satelite phones etc.