that sounds a good idea, it means there will be more security and more communication. Will it be compulsory though? A disposable sim card is free anyway, and so i guess people will still be able to be anonymous if they feel the need.
eu law will require evry simcard to be registered to a users address and pasport if applicable.
its ben law in spain since last year and is a counterterrorism mechanism.
in the madrid train bombing al qaeda used simcards in mobiles to detonate bombs these were unregistered
now they are all registered or deactivated.