Hi,

Although the phone number will not be traceable to you. The system knows your phones IMEI number, which is hardware/firmware bound to GSM digital phones. They can put 2 and 2 together and find that the IMEI number usually corresponds to your number. Unless you can reprogram the IMEI, I wouldn't trust a pre paid card. I think the IMEI number is also used as part of the encryption key.

...

or buying the optus card package, aus only, for about $70-00, which gives you a simm card and sixty dollars worth of calls.. phone is not supplied.

hurry though, as the feds want these cards to be name registered, as they >can presently be bought with no ID.. great for those untraceable dealings...