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I have Raspberry Pi 3 B board and I was install latest Raspbian image with desktop based on Debian Stretch.

Now, when I connect my usb rfid rc10c-usb-8h10d 125kHz to rbPi3 board on usb, and in command prompt, when I issue command lsusb, I get this

root@raspberrypi:/dev# lsusb
Bus 001 Device 004: ID 08ff:0009 AuthenTec, Inc. 
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

But when I issue command ls /dev/ I cannot find any usb.

What should I do? How can I find my RFID usb device?

Am I missing something?

  • What makes you think the device will mount on /dev? Many of these are hid devices and emulate a keyboard e.g. /dev/hidraw3. – Milliways Apr 27 '18 at 11:22
  • Thank's for replay. I don't know, maybe because RFID is a usb reader. I just want to try this RFID usb reader using RaspberryPi 3 B but I don't know how? (My first steps in raspbian world.) – Pajsije Apr 27 '18 at 11:59
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I think Milliways has right. You should try hidraw0 or similar. Try to observe ls /dev/ when rfid isn't connect and ls /dev/ when rfid is connect to usb.

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I suggest you try a terminal application.

If you scan a RFID tag the reader should respond as if the card number had been typed on a keyboard. Most such devices claim to be readable on Windows.

It should be possible to read input from the specific device, but I have never tried this.

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