Wireshark with Impinj readers

Question

How would Wireshark be used to capture RFID tag data from the Impinj Speedway Revolution R420 or R220 in order to write it out to a database or send it to the cloud?

Answer 1

Wireshark is able to decode the LLRP protocol. So, if you have a client that talks to the RFID reader via LLRP, you would be able to capture and analyze that traffic with Wireshark (http://wiki.wireshark.org/LLRP ). If the client does not use LLRP, there is no way to capture that communication with Wireshark.

With tshark, you can also export the RFID tag (EPC code) from the LLRP messages:

tshark -nr llrp.cap -R "llrp.param.epc" -T fields -e llrp.param.epc

Sample output:

00:00:00:00:00:00:00:00:00:00:00:f1,e2:00:34:11:b8:02:01:14:12:25:32:71,00:00:90:00:b8:02:01:14:12:25:32:76,e2:00:34:11:b8:02:01:14:12:25:32
:42,30:34:12:5b:b0:24:c3:41:23:45:67:89,e2:00:90:00:17:10:02:39:17:80:5f:1f,00:00:90:00:b8:02:01:14:12:25:32:76,00:00:00:00:00:00:00:00:00:0
0:00:f1,e2:00:34:11:b8:02:01:14:12:25:32:71,30:34:12:5b:b0:24:c3:41:23:45:67:89,e2:00:90:00:17:10:02:39:17:80:5f:1f

The tags are separated by a comma (,).

Regards
Kurt