1. A low profile storage device comprising: a housing that houses parts of the low profile storage device; a first interface, said first interface having a plurality of contact terminals movably extending out of said housing for connection to a computer; an interface controller coupled to said first interface and adapted to execute signal conversion and protocol operation of said first interface; a memory for storing data temporarily; a memory controller respectively coupled to said interface controller and said memory and adapted to transfer data from said memory to the computer to which said first interface is connected and to receive data from the computer to which said first interface is connected and then store the data in said memory; said first interface is an I-Stick interface compatible to a USB interface; said low profile storage device further comprising a printed circuit board carrying said interface controller, said memory and said memory controller, said printed circuit board having circuit line means coupled to said first interface and said printed circuit board is a flexible printed circuit board; a card reader controller coupled to said interface controller, and an insertion slot coupled to said card reader controller for receiving a memory card; said insertion slot is adapted to receive one of memory cards including contact type memory card, SIM card, CF memory card, SD memory card; and a RFID receiver mounted on said printed circuit board to receive a RFID code from a RFID transmitter such that when the received RFID code is matched, the RFID receiver does not encrypt the data in said memory; when the received RFID code is not matched, the RFID receiver encrypts the data in said memory.