This is an old subject, so by now you have probably already tried it. I would say it will work, but you may get missed reads. I have had to rewire entire buildings because the reader wire wasn't shielded. If there is any noise near the wires it will cause miss reads. Fluorescent lights are notorious for this!! In ProWatch you will get "Invalid Forward Card Read" events. If it is only in the travel cable, you may be ok, but you better be prepared to add another cable.