TLDR Tech / InfoSec
Google adds Hand gesture verification for reCAPTCHA
Google added hand gesture verification to reCAPTCHA as part of its Cloud Fraud Defense suite, prompting users to perform gestures on camera while the system extracts 21 hand-knuckle landmark coordinates to confirm that a live human is present. Google states that the videos remain unlinked to any user identity, do not include audio, are deleted once the challenge completes, and never reach third parties. The shift moves bot detection toward camera-based biometric signals, so teams weighing adoption should weigh the camera-permission friction and the privacy optics of capturing hand video against the stated deletion guarantees.
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