The burqa or niqab can effectively mask ones identity. There have been multiple cases reported within Saudi Arabia of men masquerading as women simply by donning a burqa/niqab. I remember one such case showcased on Saudi Arabian television where a man and a burqa/niqabi clad “woman” were stopped at a checkpoint outside of Riyadh. While I do not know what prompted the “couple” to be stopped but speculate it was due to a tip off, police found when asking the “couple” to exit the vehicle that the “woman” had been hiding bootleg bottles of alcohol under the abaya. Further investigation revealed that the “woman” was in fact a man.
I can give you millions of examples whre illegal arms, ammunition, drugs have been hidden in motor vehicles, homes, offices, does that mean the all vehicles should be banned, all homes and offices destroyed. more people are killed by motor vehicle accidents than fire arms, should all vehicles be banned. In the western countries all crimes done by men are done while they were wearing trousers, should all trousers be banned. most illegal arms are hidden inside the pants, should pants be banned. If you want to have a meaningfull discussion talk some sense, don't give ne or rwo examples.