What Is
Presence Verification?

1500s: Wax seals. A physical imprint proved the sender was present when the document was sealed. Forgeable with sufficient skill. 1800s: Handwritten signatures. A unique motor pattern, hard to replicate perfectly. Still used today, but AI can now forge signatures from a single sample. 1960s: Passwords. Something you know. Proves knowledge, not presence. Stealable, guessable, phishable. 1990s: Biometrics. Fingerprints, face scans, iris patterns. Something you are. Unforgeable for decades — until AI caught up. Now deepfakes defeat them at >95% success rates. 2000s: CAPTCHAs. Completely Automated Public Turing test. Proves you can solve a puzzle. AI now solves them faster than humans. 2010s: Hardware tokens (YubiKey), TOTP (Google Authenticator). Something you have. Proves possession, not presence. Lose the device, lose the proof. 2020s: Liveness detection. Checks for blinking, head movement, texture. Proves a face is alive. But AI-generated real-time video passes these checks now. 2026: Motion-signature verification. Proves a human is physically present and generating authentic motion — not through a snapshot, but through a continuous performance. The first presence verification method rooted in physics, not heuristics. AI cannot forge the entropy characteristics of biological motion.

The next evolution is not "prove you are present at login" but "prove you are continuously present." This is the shift from authentication to continuity. Authentication verifies a moment. Continuity verifies a trajectory. An authenticated session tells you the user logged in at 9:00 AM. A continuity chain tells you the same human has been present continuously from 9:00 AM to 5:00 PM — through periodic motion-signature verifications that AI cannot forge and that cannot be replayed. MyShape Protocol is building this future. Not another CAPTCHA. Not another biometric. A primitive that verifies what actually matters: continuous, authentic human presence.