Description: U disk-based authentication- procedures with the advance of technology, IT technology for the development of fly Mengjin. USB into the hands of ordinary computer users, has gradually replaced the calculation of the location of the floppy. USB now more manufacturers, the price relatively low, stable high, larger capacity, more and more features. The hands of computer users to use USB devices as encryption vector is the most suitable choice. Because software vendors do not require any investment, need not worry about the core technology. Most software vendors is to develop a confidential system based on USB.
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