Police have yet to completely wrap their heads around modern iPhones like the X and XS, and that's clearer than ever thanks to a leak. Motherboard has obtained a presentation slide from forensics company Elcomsoft telling law enforcement to avoid looking at iPhones with Face ID. If they gaze at it too many times (five), the company said, they risk being locked out much like Apple's Craig Federighi was during the iPhone X launch event. They'd then have to enter a passcode that they likely can't obtain under the US Constitution's Fifth Amendment, which protects suspects from having to provide self-incriminating testimony. There are ways around this system, whether or not they're ethically sound -- the FBI recently forced a suspect to unlock his iPhone X using Face ID.