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Many services do some sort of “liveness check” to verify there’s a live human interacting with the webcam for the selfie.


Hm, do they stream user's camera feed to their server? Seems like a questionable practice if the user is not made aware of that.


I've seen cool computer vision demos that run client-side in the browser, so I hope they don't stream the feed. OTOH if they do stream, warning the user would go a long way.


If you send the result only it’s easy to spoof


Good point!




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