Mt Airy, MD
Also... keep your wallet away from it, so it doesn't deactivate your credit cards! 
Seriously though, I just searched for this, after seeing an ad on Ebay for "pinball reed switches".. That implies that some games REQUIRE that the pinballs are magnetized, right?? Otherwise, how would a reed switch be useful?
Also, I'd be curious (and guess I should test) whether the "Magnasave" on my BK has a side effect of magnetizing or demagnetizing the pinballs.. I wonder if a mod could be made to ramp down the current in the coil instead of a quick shutdown if that's what would make it demagnetize..
