The thing about knowledge is that once it’s out there, nothing on Earth is going to stop it. Unfortunately for some, the understanding behind turning a mobile phone into a remote bomb detonator is very much out there.

More and more terrorists are using cell phones to remotely detonate bombs — and there’s not much authorities can do about it. At least, not that they can say.

Cell phones have been connected to terrorist bombings in Madrid, Bali and Israel. Many roadside bombs in Iraq are believed to be triggered by cell phones.

Last month’s train bombings in London have yet to be linked to the use of cell phone detonators.

But U.S. authorities were so worried, they shut down cell phone service in tunnels linking New York and New Jersey for two weeks immediately after the bombings. [Read the rest]