Well, then you are just being willfully ignorant because I already typed out why getting in to a cab is scary. Features like this are going to help women choose what type of situation they are putting themselves in. Say whatever you like about women being to use a gun/knife too, but assault and sexual assaults happen, the average man is stronger than the average woman and being in a confined space with a stranger is putting yourself at risk. Women are at a greater risk then men, so should have greater control how they handle those interactions.