The card can be plugged on to the USB port while making online purchases, thus eliminating the trouble of typing the CC no and other details. The card can also be used at stores with a IC card reader. The built-in IC chip includes the public authorization and the internet credit payment programs. However, it is limited for users to delete or save data so that the USB itself cannot be used as a portable storage device.
Shinhan Card has rolled out the first ever USB credit card in Korea. -- more at OnlyGizmos