Local signing preview · v0.4.0
Review, sign, then capture your thumbprint.
This prototype guides capture from the phone’s rear camera. It analyses the live camera feed; it does not accept a normal photo upload as the primary path.
Stage 1 of 4 · Review the document
Step 1
Review the document
Select your role before continuing.
Changing signer clears the current name and captured marks after confirmation. In a live signing service, your invitation must verify and restrict your assigned role.
Read the full Special Power of Attorney before continuing. The final signing service will make the document and its hash immutable before each signer acts.
This demo's source PDF is served from a public URL. Private invitations and document access control are not connected yet. Do not use this link for a real multi-party signing.
The principal's signature and thumbprint appear in the execution section on page 4. Both witnesses have their own signature and thumbprint spaces on page 5. The document stays five pages; its wording and execution date are not changed.
Step 2
Add your signature
Step 3
Capture a clear right-thumb ridge image
Centre the front fingerprint pad inside the oval. Start about 15–25 cm away and adjust the distance to fit. The first clear image locks automatically at 75% overall ridge coverage with a 90% clear centre. The sides do not need full coverage.
Keep the thumb facing the camera. Tilt it just a few degrees left or right to improve the light and ridge visibility, then pause. Keep the same front view throughout.
Start the camera when you are ready. Frames remain in this browser and are never uploaded by this prototype.
Centre lock · v0.2.0. A clear centre matters more than fully visible sides. The camera stops after the locked image passes its checks, or after one minute.
Verified fingerprint ridge capture
This local prototype creates a visual contactless ridge image. It does not claim NADRA verification, liveness proof, contact-equivalent geometry, or a database match.
Camera diagnostics
The log contains numerical measurements only. If needed, you can explicitly save the most recently rejected patch to your own phone; it is never uploaded automatically.
Start the camera to record diagnostics.
Accept a signature and capture a clear thumbprint to continue.
Step 4
Review your marks in the document
Your accepted marks appear in the selected signer's allocated space.
Local preview only: no invitation, identity check, upload or witness submission has happened. This download is a partial copy, not the final signed document.
Page 4 of 5 · Principal
Page 5 of 5 · Witnesses
The download is one five-page PDF containing only this signer's marks. It is not sent to the admin or combined with other submissions. Store and share it carefully.
How will all signers produce one final document?
A protected signing service must invite the principal and each witness separately, verify access, and accept only that signer's assigned fields. After everyone submits, the service assembles and locks one final PDF. That service is not connected in this local preview.