PRSN Human Verification swaps puzzle-solving for a brief physical action on the user's phone. The check happens on the device. The site receives a signed proof that says: a real person finished a fresh challenge, here, just now.
The Golden Path
For most sites, the flow is shaped like a standard CAPTCHA, but the work has moved off the browser and onto the user's phone.
At the partner site
A small widget on the page renders a Deeplink or QR code, the same way a CAPTCHA would — or, for native integrations, your app calls our SDK directly. Nothing else is asked of the visitor's browser.
Verification opens
The visitor scans the code with their phone, or your SDK invokes verification in place. Either way, a consent screen names the site — so a re-hosted or relayed handoff is easy to spot.
One short human gesture
The app picks one of a small set of physical actions and asks the visitor to perform it — a wrist sway through a target arc, a tap in time with a vibration, or briefly showing an open hand to the camera. Each request is freshly parameterized for that one session.
A signed proof is delivered
When the action completes, a single-use, short-lived token is handed to the partner's backend. It says: a human finished this challenge, for this site, within the last two minutes. That's all it says.
Why Bots Can't Fake It
The challenge isn't a puzzle for a smarter model to solve, it's a physical action for a real person to perform on a real phone. Three properties hold the line:
Every challenge is one-shot. Parameters change every session, so nothing recorded earlier is good for anything later.
Only the genuine PRSN app can sign a verdict. Re-signed copies, scripted clients, and emulators don't get a signature, and without a signature, there is no proof.
The site name is anchored to the session. The visitor sees the real partner on the consent screen, not whoever sent them there.
Private by Design
We'll never ask for your ID or your fingerprint. Every check happens on your device, and nothing is recorded, uploaded, or stored. The signed proof carries a simple 'yes', never a profile, a score, or a behavioral trace.
Need Stronger Guarantees?
For most sites, a human gesture and a signed token is exactly the right shape. Some partners need more, like those verifying employees or guarding access to high-stakes systems where the cost of a single bad actor is unusually high.
For these cases, we're shaping an Advanced Verification track. Things on the table include hardware-backed device attestation and the return of a verified artifact such as a photo, alongside other partner-specific signals.
Advanced Verification is not an off-the-shelf product. We want to design it with the partners that need it. If that's you, get in touch.
partnerships@fre-studios.com