Google is testing a new reCAPTCHA check that uses hand gestures for verification. While reCAPTCHA can still rely on visual and audio puzzles, this adds another layer to confirm whether someone is human. This new experimental method is reportedly seeing a limited rollout, though testers have already found a way to bypass it.
Google is testing a new reCAPTCHA check that uses hand gestures
Google says that the new verification system uses short hand-gesture videos. It analyzes one or more videos of a user’s hand as they perform various actions/gestures, like a wave, then extracts hand landmark data from those video clips to decide whether the user is a real person or a bot.
When the challenge triggers, the browser requests camera permissions. You will then have to perform a few actions and gestures. After which, Google’s machine learning system records a brief video and extracts hand-landmark data covering 21 hand-knuckle coordinates. If you can’t complete the check, reCAPTCHA will switch to the older visual or audio puzzles.Â
Not so hard to bypass it
If you’re wondering about privacy, Google says that it will never associate video clips with a user’s identity. Additionally, it doesn’t record any audio. In fact, it will delete the videos after the verification process. That said, the tech giant adds that the information it collects is used and stored in accordance with the Google Privacy Policy. This statement sort of makes things confusing as to whether it’s actually storing the data or not.
While that’s that, Tom’s Hardware reports that testers have apparently already found a way to outsmart the new verification system. All it reportedly took was a simple stock image of a person waving into an OBS Virtual Camera to fool it. So, at this stage, the hand-gesture check does not seem very effective.
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