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sun.security.smartcardio.PCSCException: SCARD_W_UNPOWERED_CARD	at sun.security.smartcardio.PCSC.SCardConnect(Native Method)	at sun.security.smartcardio.CardImpl.(CardImpl.java:96)	at sun.security.smartcardio.TerminalImpl.connect(TerminalImpl.java:78)	at rfidreadtest.RFIDReadTest.handleCard(RFIDReadTest.java:54)	at rfidreadtest.RFIDReadTest.main(RFIDReadTest.java:42)