Behavioral Trust Without Surveillance Infrastructure

Last week, a security research team published a technical breakdown of what happens when you complete an "age verification" check powered by Persona. What they found wasn't an age check. It was a behavioral biometrics pipeline. Persona's SDK — used by hundreds of companies including Anthropic and OpenAI as listed data processors — captures hesitation patterns, touch pressure, typing cadence, and screen-gaze during the verification flow. 269 separate behavioral checks in the decompiled code. Fing