OnePlus 6 Face Unlock can be tricked by a black-and-white photograph

To the surprise of… not very many people, it has emerged that the OnePlus 6’s Face Unlock system can be fooled by a picture of the phone owner’s face.

Twitter user @rikvdujin this week posted a video that shows the phone being successfully unlocked by a friend armed with a printout of @rikvdujin’s face.

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It takes his friend a few attempts to beat the system, but it’s still a worrying finding. Furthermore, @rikvdujin says it can be tricked by black-and-white pictures too.

In OnePlus’ defence, no face unlock system is fully secure. The facial recognition system used by the Samsung Galaxy Note 8 was tricked soon after the phone came out, and even the iPhone X’s much-lauded Face ID system can be fooled by a mask.

What’s more, OnePlus doesn’t allow anyone to use it to authenticate payments from Google Play or log into banking apps. You can turn to the phone’s fingerprint scanner for that.

“We designed Face Unlock around convenience, and while we took corresponding measures to optimise its security we always recommended you use a password/PIN/fingerprint for security,” OnePlus told PhoneArena.

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“For this reason Face Unlock is not enabled for any secure apps such as banking or payments. We’re constantly working to improve all of our technology, including Face Unlock.”

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