Hi,


I think the use of word tapping is misleading, They are called Lawful Interception Gateways and the design of such systems is in such a way that there are several checks and balances that enhance the 'Lawfulness' of the system. 


They have been used to in cases of suspected terrorist case and even in European countries the need for Public security is always  the overriding concern when implementing such cases.

All in all  such systems  are quite useful, so would call for proper legislation to safeguard public security and Privacy concerns in general.


regards 

Patrick