Assertion: smart card's use | /r/HasProperty | spu
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Source sentences:
text: EMV still requires that the card includes TB 1 = ‘00’, and that remains common practice; doing so explicitly indicates that the card does not use the dedicated contact C6 for the purpose of supplying a programming voltage (V PP ) to the card; the cards might however use C6 for Standard or Proprietary Use (SPU), such as communicating with a NFC front end by the Single Wire Protocol (SWP).