Smart cards are pitifully under-powered compared with mobile phones. They are a throwback to the old days of rubber stamps and typewriters. Smart card technology is old-fashioned, pedestrian, limited and inflexible. It will stifle innovation.
It is extraordinary that governments should choose to base their ID voucher schemes on smart cards. It is some form of global illusion. At some point soon, we will all look back and wonder how we missed the obvious capabilities of mobile phones.