Sony has finally delivered on its Mofiria promise with what it claims is the world's smallest and lightest finger vein reader. That assertion may be challenged by Hitachi, whose 3mm-thick scanner promises to be even smaller, but the critical difference here is that the FVA-U1 is about to go on sale in Japan come December 18, whereas Hitachi's hardware is nowhere to be found. The Sony scanner weighs a measly 33 grams, hooks up via