# Unforged Nib for platforms: sign-ups and e-signatures

> Unforged Nib checks every signature at sign-up, e-signing and KYC against the person's own references, and says why.

Source: https://unforged.ai/nib/use-cases/platforms

**The problem:** Thousands of sign-ups, and nobody to check each signature by eye.

## What you send

- The signed form, PDF or phone photo
- The person's reference signatures, enrolled once
- Your own reference for the case, such as an account ID

## What you get back

- A verdict: one of six, from AUTO APPROVE to NO SIGNATURE
- A probability from 0 to 1, with a band
- Plain-language reasons you can show an auditor
- The policy and version that produced it

## How it fits your process

1. **Enrol at onboarding** (API): Enrol the customer's reference signatures when their account is opened.
2. **Check each signing** (API): Send the signed document with the customer and your own reference.
3. **Route by verdict** (API): A webhook brings each result back. FLAG and FAILED go to your review team.
4. **Catch up in bulk** (bucket drop): Backfill older sign-ups by dropping them in your bucket with a manifest.

## Decisions that matter

- **AUTO APPROVE**: A clear match goes straight through. Nobody waits.
- **FLAG**: A person takes a look before the account goes live.
- **FAILED**: Always a person, never an automatic rejection.

## What it reads

Phone photos, PDFs. Up to 50 MB and 200 pages.

$0.50 per check, pay as you go. [How Unforged Nib works](https://unforged.ai/nib/product).