I might at this point also mention that my wife, whose maturity kicks in (and I mean that literally) when mine fails, has nixed my buying keebs solely because they have odd part numbers.
She has a point, I suppose. To show anyone how distinctive something like this is, you'd need to turn it over, at which point it couldn't be used as a keeb anymore, could it? I.e. this feature would be, during normal operation, invisible.
Of course one could add it to one's GH sig, put up a special website and offer custom-printed Lexmark 59G swag (T-shirts, cocktail napkins, tractor caps, etc.). But still, right? That's what I'm thinking here, anyway.