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Just the wording makes it seem like something TSA would be glad to see as a bomb.

Reading it put me on some Persons of Interest list from the TSA.

That's so simple that it could actually become a product.

Yes, also make sure the wires are visible and suspicious looking.

For extra credit, include some mysterious oozing stuff so it looks like battery acid is leaking.

great idea. Transformer wire has an enamel coating, so for a resistance based system it wouldn't work.

Also I wonder what effect will corrosion/shock have on the resistance ?

Maybe an impedance or inductance based system with enameled wire would be more robust. So many questions, interesting :)