Thanks New York Slimes.
I know this has been addressed but I have to address it again due to the massive post about these cell phones detonating charges.
This is not what the concern is about. It is about the fact that they can call and make plans to conduct terrorists acts without being traced.
I am not a jenious but I am sure anyone who spend about 1 week in Radio shack could make remote anythings.
This is about communication not detonation. Now, of course they could use them for detonators but they would probably have to do at least the same amount of work as building it from scratch.
Did I say the problem is not being able to track and monitor the calls.
I could be wrong and have been once.