Google has filed a patent suggesting users stick out their tongue or wrinkle their nose in place of a password.
It says requiring specific gestures could prevent the existing Face Unlock facility being fooled by photos.
The Jelly Bean version of Android introduced the need for users to blink their eyes as a check, but users soon demonstrated it could be fooled.
A spokesman for Google was unable to comment on when the suggested technology might be implemented.
Web Webster has more than 20 years of writing and editorial experience in the tech sector. He’s written and edited news, demand generation, user-focused, and thought leadership content for business software solutions, consumer tech, and Linux Today, he edits and writes for a portfolio of tech industry news and analysis websites including webopedia.com, and DatabaseJournal.com.
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