Subscriber identity modules SIM cards
In the UK, we are used to all mobile phones having a SIM card in them. The SIM card is our telephone number as far as most of us are concerned. It also stores some of our contact details, the rest being stored on other cards in the phone. It comes as a shock, therefore, to discover that Japanese mobiles do not have SIM cards.

You can work out from first principles, of course, that they must have some equivalent. After all, phone calls need to be connected and subscribers need to be identified so that they can be billed.

And they do have some equivalent. The phone number is "burned" in to ROM.

The provisions of dematerialised ID apply to Japanese phones just as much as to others.

© 2002-2007 Business Consultancy Services Ltd
on behalf of Dematerialised ID Ltd