root@raspberrypi:~# lsusb
Bus 001 Device 004: ID 076b:3031 OmniKey AG
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.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


root@raspberrypi:~# pcsc_scan
PC/SC device scanner
V 1.4.23 (c) 2001-2011, Ludovic Rousseau <ludovic.rousseau@free.fr>
Compiled with PC/SC lite version: 1.8.11
Using reader plug'n play mechanism
Scanning present readers...
0: OMNIKEY AG 3031 USB [OMNIKEY 3x21 Smart Card Reader] 00 00

Thu Nov 17 21:35:31 2016
Reader 0: OMNIKEY AG 3031 USB [OMNIKEY 3x21 Smart Card Reader] 00 00
Card state: Card inserted, Exclusive Mode,
ATR: 3B 34 94 00 30 42 30 30

ATR: 3B 34 94 00 30 42 30 30
+ TS = 3B --> Direct Convention
+ T0 = 34, Y(1): 0011, K: 4 (historical bytes)
TA(1) = 94 --> Fi=512, Di=8, 64 cycles/ETU
62500 bits/s at 4 MHz, fMax for Fi = 5 MHz => 78125 bits/s
TB(1) = 00 --> VPP is not electrically connected
+ Historical bytes: 30 42 30 30
Category indicator byte: 30 (proprietary format)

Possibly identified card (using /usr/share/pcsc/smartcard_list.txt):
3B 34 94 00 30 42 30 30
Conax card: ComHem sweden