You may also want to check local scanner laws. If scanners are banned in the location in which you are going through security, you may have a problem. Some countries tend to be fairly strict with their scanner laws.
I used mine on NW 68 from DTW-AMS when it used to be a B744, that was sweet. I heard the F/O or capt. acknowledge a turn command from Cleveland artcc and about a second and a half later we executed the turn... very cool I think.