Portable digital storage device in the nature of USB sticks for the secure storage of cryptocurrency, for the authentication of cryptocurrency stored thereon and for the secure transfer of cryptocurrency

ELECTRIC AND ELECTRONIC, OPTO-ELECTRONIC, ANALOG, DIGITAL, WIRE-BASED AND WIRELESS COMMUNICATION SYSTEMS AND APPARATUS, NAMELY, PRIVATE BRANCH EXCHANGES; TELEPHONES, AND TELEPHONE SYSTEMS, COMPRISED OF SYSTEM TELEPHONES, ANSWERING MACHINES AND OPERATOR TERMINAL; APPARATUS FOR ACQUISITION, COMPUTING, BROADCASTING, TRANSMITTING, EXCHANGING, STORING, RECEIVING AND OUTPUTTING OF SPEECH, TEXT AND DATA, NAMELY, TELEPHONE CONNECTION COMPUTER HARDWARE ROUTERS AND SWITCHING DEVICES; TELECOMMUNICATION ...