radio frequency identification (RFID) contactless communication systems and their individual components, namely, dedicated portable RFID cards, dedicated RFID readers, RFID writers for writing data to RFID cards, and hand-held electronic devices for authenticating identification or providing physical or logical security access, namely, personal digital assistants (PDA's) and cell phones

'access':43 'assist':47 'authent':35 'card':16,27 'cell':51 'communic':6 'compon':11 'contactless':5 'data':24 'dedic':13,17 'devic':33 'digit':46 'electron':32 'frequenc':2 'hand':30 'hand-held':29 'held':31 'identif':3,36 'individu':10 'logic':41 'name':12,44 'pda':48 'person':45 'phone':52 'physic':39 'portabl':14 'provid':38 'radio':1 'reader':19 'rfid':4,15,18,20,26 'secur':42 'system':7 'write':23 'writer':21

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