Tzitzit for women?

Over at Maya Escobar there are pictures and a post about "Shomer Negiah Panties," essentially ordinary cotton undies, with the words "Shomer Negiah" across the backside. Maya says:

Shomer Negiah Panties allow a woman to abide by the halacha, but still be individual and sexy at the same time

Allows her to follow the halacha? How?

Maybe they are meant to work like tzitzit:

And they shall be tzitzit for you, and when you look at them you will remember all of the Lord's commandmentsand do them and not follow after your heart and after your eyeswhich lead you astray.

Imagine: The guy won't take no for an answer. He's a real hound, and nothing the girl says is working. So, finally, she whips off her skirt, and bends over to show him the shomer negiah label. At which point... what? The guy says, "Ah! Sorry, didn't know. My bad"?

I just don't see it.