Principal · local signing preview
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
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.
Your signature and thumbprint will be placed on an additional signing sheet, alongside separate reserved boxes for both witnesses. The original five pages stay unchanged, including their draft wording and execution date.
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 signing sheet
Your accepted signature and thumbprint appear in the principal's boxes below. Witness boxes remain empty until those people sign independently.
Local preview only: no invitation, identity check, upload or witness submission has happened. This download is a partial copy, not the final signed document.
The download includes the original five pages plus this signing sheet. It contains your signature and thumbprint: 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.