Oh boy ----- you seem to be stuck with the "security" issue here ----- take the security issue out of the equation for a moment and think out side of the box about the wider pragmatic connotations of the law.
France a “laïcité”, or a pseudo secular state albeit a predominantly Catholic society ----- would have to eventually administer same ban into some of its public schools ----- of course if not yet in effect----- which are still run by Nuns ------ does this law mean these Nuns would have to remove their stoles, crosses and wimples?. Does it mean that ----- If priests were to visit a school, they would have to remove their robes?. Would Protestant ministers have to remove their clerical collars?. Would Orthodox Jewish men have to remove their Yarmulkes?. ----- May be on the paper but not in reality!.
Nuff said!
none of the above examples do any of the people cover their faces