<div dir="ltr">I assume this is some kind of ACS reader, and those NFC readers usually support a specific API for low level RF things, via SCardControl or SCardTransmit, eg. <a href="https://www.acs.com.hk/en/products/342/acr1252u-usb-nfc-reader-iii-nfc-forum-certified-reader/#tech-specs">https://www.acs.com.hk/en/products/342/acr1252u-usb-nfc-reader-iii-nfc-forum-certified-reader/#tech-specs</a><br><br>PC/SC gives you a way to talk to a card (SCardTransmit) in a high-level APDU oriented way and to talk to (vendor specific, proprietary, such as libacsccid) readers with SCardControl. The rest is for you to figure out :) <div><br></div><div>Best,</div><div>Martin<br><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, 15 Aug 2017 at 22:19 Greg Wilson-Lindberg <<a href="mailto:GWilson@sakuraus.com">GWilson@sakuraus.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="#0563C1" vlink="#954F72">
<div class="m_8957870977145896065WordSection1">
<p class="MsoNormal">We have two problems/not understandings:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"> 1. reading more than one card at the same time<u></u><u></u></p>
<p class="MsoNormal"> 2. issuing a PWD_AUTH command to a connected card<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">It is my understanding that to read a second card that is within range of a cardreader it is necessary to issue a HLTA command to the card. The HLTA is a low level card command and I have not been able to find out how to pass the card command
through pcsc to the card.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">The PWD_AUTH command is also a low level card command and falls into the same issue of not knowing how to pass commands through to the card.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">We are running on a Raspberry Pi 3 with an ACS AVM1252U-Z2 reader and NTAG213 tags:<u></u><u></u></p>
<p class="MsoNormal"> pcsc-lite version 1.8.13.<u></u><u></u></p>
<p class="MsoNormal"> Copyright (C) 1999-2002 by David Corcoran <<a href="mailto:corcoran@musclecard.com" target="_blank">corcoran@musclecard.com</a>>.<u></u><u></u></p>
<p class="MsoNormal"> Copyright (C) 2001-2011 by Ludovic Rousseau <<a href="mailto:ludovic.rousseau@free.fr" target="_blank">ludovic.rousseau@free.fr</a>>.<u></u><u></u></p>
<p class="MsoNormal"> Copyright (C) 2003-2004 by Damien Sauveron <<a href="mailto:sauveron@labri.fr" target="_blank">sauveron@labri.fr</a>>.<u></u><u></u></p>
<p class="MsoNormal"> Report bugs to <<a href="mailto:muscle@lists.musclecard.com" target="_blank">muscle@lists.musclecard.com</a>>.<u></u><u></u></p>
<p class="MsoNormal"> Enabled features: Linux arm-unknown-linux-gnueabihf serial usb libudev usbdropdir=/usr/lib/pcsc/drivers ipcdir=/var/run/pcscd configdir=/etc/reader.conf.d<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">and libacsccid v1.0.8-1<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Regards,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Greg Wilson-Lindberg</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Sakura Finetek</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">310-783-5075</span><u></u><u></u></p>
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