Private signing prototypeSpecial Power of AttorneyLocal session

Sami Ullah · witness signing

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.

Step 1

Review the document

Open full PDF

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.

Step 2

Add your signature

Draw your usual signature.

Step 3

Guided right-thumb capture

Use a plain white background. Start with the phone about 15–25 cm from your thumb—moving extremely close prevents many phones from focusing. Follow the live guidance; capture starts after the frame is stable and passes the quality checks.

Live ridge view
Camera is off
Light
Focus
Motion
Ridges

Start the camera when you are ready. No capture is transmitted in this prototype.

Camera diagnostics

Records camera capabilities and numerical quality measurements only. No image or fingerprint pixels are included.

Start the camera to record diagnostics.

Step 4

Review & finalise

The final implementation will place approved fields into the PDF, generate a document hash and signer audit record, then lock the completed copy. This local prototype deliberately does not transmit or finalise a legal document.

Complete the signature and guided capture first.