keywords: panasonic memory cards electronics invents
text: Firm Invents All-Purpose Memory Cards By YURI KAGEYAMA    TOKYO (AP) -- A leading Japanese electronics company is developing memory cards that can be used to make cashless payments, open locks and read identification with a simple flick.    Matsushita Electric Industrial Co., which makes Panasonic-brand products, said sample shipments will begin in December, with commercial shipments to follow by late next year...