That sucks man.

I've taken to usingmetal stamps to stamp my driver's license number on all my stands in inconspicious places . I read an article that said alot of thieves don't really pay attention to the stamps, because they look like they were applied at the factory, as opposed to using an engraver. And according to this, it's "safer" than putting your social security number on there, and if a cop were to see it, it will register with him that it's a driver's license number, and he can look it up.