NFCのソースを表示

[[Category:ハードウェア]]
[[en:NFC]]
[[pl:NFC]]
[[Wikipedia:Near-field communication|Near-field communication]] devices have become pretty easy to operate and read out under Linux. This page explains how to quickly set up the most common NFC scanners.

== Installation ==

[[Install]] {{Pkg|ccid}}, {{Pkg|libnfc}}, {{Pkg|acsccid}}, {{Pkg|pcsclite}} and {{Pkg|pcsc-tools}}.

The {{Pkg|pcsclite}} package ships a {{ic|pcscd.socket}} which will cause the {{ic|pcscd}} server to start when a program requests it. Alternatively, you can manually [[start/enable]] the {{ic|pcscd.service}}.

After installing {{Pkg|libnfc}}, it is important that you re-plug your card reader as it ships with a few [[udev rules]] and [[Kernel module#Blacklisting|kernel module blacklist]] that need to load before loading the actual driver.

== Scanning an NFC card ==

Now everything should already be in place for a test scan. Plug in your NFC reader and run {{ic|pcsc_scan}}. This tool will try to communicate with your scanner and also poll for any NFC cards placed on your scanner. If you try to scan a card after the tool has found your scanner, you should see events printed on your terminal.

{{hc|$ pcsc_scan|2=
Using reader plug'n play mechanism
Scanning present readers...
0: ACS ACR122U 00 00
 
Sun Sep  5 05:15:10 2021
 Reader 0: ACS ACR122U 00 00
  Event number: 0
  Card state: Card removed, 
}}

== Supported devices ==

See https://ccid.apdu.fr/#readers for a list of scanners supported by ''ccid'' and https://nfc-tools.github.io/resources/ by ''libnfc''.

== Troubleshooting ==

In case things do not seem to work, investigate the [[journal|log]] of {{ic|pcscd.service}}