Apple has explained why its new facial recognition feature failed to unlock a handset at an on-stage demo (see around the 1:35:58 mark here) at the iPhone X's launch on Tuesday. From a report: The company blamed the Face ID glitch on a lockout mechanism triggered by staff members moving the device ahead of its unveil. Apple's software chief dealt with the hiccup by moving on to a back-up device, which worked as intended. But the hitch was widely reported. "People were handling the device for [the] stage demo ahead of time and didn't realise Face ID was trying to authenticate their face," an unnamed company representative is quoted as saying by Yahoo's David Pogue. "After failing a number of times, because they weren't Craig [Federighi], the iPhone did what it was designed to do, which was to require his passcode."