Hand gesture verification
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reCAPTCHA is a part of Google Cloud Fraud Defense. For more information, see Google Cloud Fraud Defense.
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Hand gesture verification Stay organized with collections Save and categorize content based on your preferences.
This document provides information about data collection, camera permissions, and accessibility for hand gesture verification.
Data collection and storage
When the hand gesture feature is enabled, reCAPTCHA collects the following data:
- Google analyzes one or more videos of a user's hand as they perform various actions or gestures. The video is processed to extract hand landmark data, which includes 21 hand-knuckle coordinates.
- The videos are never associated with a user's identity and are deleted after the verification process. Audio is never recorded.
- Google does not retain any images or videos of a user's hand gestures beyond the verification process or use the data for any other purpose. Videos or images are automatically deleted after the challenge is complete.
- The information Google collects is used and stored in accordance with the Google Privacy Policy.
Additional data storage
Permissions
Hand gesture challenges require permission to access a user's camera. After the user consents to perform hand gestures, Google receives camera permissions, and users can manage these permissions in their browser settings at any time. Google processes hand gesture videos for the sole purpose of security verification and does not transfer any related data or permissions to third parties.
Accessibility
For users with accessibility needs who cannot use hand gestures to complete the challenge, reCAPTCHA continues to provide visual and audio challenges, and develop more accessible and secure alternatives.
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Last updated 2026-07-22 UTC.
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