Apple, who did not respond for comments, seems to have built into their new phone some awareness of the problem. If you push the power button five times in quick succession it turns off facial recognition. It does, however, require that the user have enough wherewithal to remember to turn off face recognition before handing their phone over to the cops. And it assumes that the owner will be handing over the phone, that the phone won’t be seized. If you’re going to use iPhone’s face recognition, it may benefit you to turn it off before you go to an event – like a protest – where there’s a chance your phone might end up in the possession of the authorities.