I fly interstate Australia twice a month. I take my Zapper, Colloidal Silver generator, Elanra portable Ioniser and water Deminimiser in my hand luggage. Most of the time when they scan it they don't ask for a closer inspection. When I had my Clark Zapper twice they did, and once for the CS generator because of the Silver Electrodes looking like a sharp object, but never with The Terminator. As a precaution I use to take the batteries out of everything before travelling, but the last few times I haven't bothered.
~ Jowanna.