According to several expert a datacard is any removable computer component, approximately the size of a credit card, that contains data, or that contains nonvolatile memory to which data can be written and from which data can be recovered. The term is a synonym for smart card. Some datacards are portable devices and include such components as flash memory modules and proprietary memory sticks. They are useful for the transfer of files among computers and for short-term data backup. Still other datacards are used with notebook computers to provide mobile wireless Internet access. At the present more and more people do use data card. This data cards are safe to use and will make your save data be more secure at the present. More and more people and company are using this datacard. Easy to use and much affordable according to my friend who use this data card for several years now.