---
title: "Emitir un e-CPF con validación facial"
product: "Amplia"
slug: "issue-an-ecpf-with-your-face"
language: "es"
canonical_url: "https://try.lacunasoftware.com/es/amplia/issue-an-ecpf-with-your-face"
docs_url: "https://docs.lacunasoftware.com/en-us/articles/amplia/integration/issue-from-csr"
samples: []
samples_repo: null
trace_recorded: null
last_generated: "2026-11-10T22:45:25Z"
---

# Emitir un e-CPF con validación facial

Escriba sus datos y muestre su rostro: Datavalid, de Serpro, lo compara con la foto de su CNH, a través de Lacuna Bio en Rest PKI Core, y Amplia le emite un e-CPF de prueba.

Live demo: [https://try.lacunasoftware.com/es/amplia/issue-an-ecpf-with-your-face](https://try.lacunasoftware.com/es/amplia/issue-an-ecpf-with-your-face). It runs against Lacuna's real products; this page describes it for AI coding agents.

## Call sequence

No call sequence is recorded for this demo, so none is shown here: this page doesn't guess calls. Its first call, the Serpro check, carries a real person's CPF, name and birth date, so it is not recorded, by choice. The docs and samples below show the calls; the live demo makes them.

## Patterns to copy

- Run Serpro's Datavalid `pf-basica` check before any face capture, returning users included: the name must match exactly, the birth date match, the CPF be regular, and a CNH exist, since Datavalid compares the face with the CNH photo.
- Start a Face authentication of the CPF's digits first: one that starts is a returning user's, who never gets a Liveness check or a Datavalid call. On `BioSubjectNotFound`, run a Liveness check, with no Subject identifier, then read the face it captured with `GET api/bio/sessions/{id}/result-data`. The Demo uses a Rest PKI Core subscription of its own for these faces.
- Run the Datavalid validation yourself, from the server, on Datavalid v4's `pf-facial`, with the CPF and that face only, and sort its similarity: GoodMatch at 0.93 or more, UncertainMatch at 0.85 or more. Don't ask Rest PKI Core for it with `VerifyFaceIdentityExternally = true`: its validation still calls Datavalid v3, which Serpro refuses.
- Only on a GoodMatch, enroll that same image under the CPF's digits with `POST api/bio/enrollments` and `VerifyFaceIdentityExternally = false`. On `BioSubjectAlreadyEnrolled`, start a Face authentication instead, never replacing the enrollment.
- Hold the face in memory for the Datavalid call and the enrollment only: never store, log or show it. Never turn on the Serpro client's sensitive-data logging: it would log the face, the CPF, the name and the birth date.
- Treat the session URL and the widget's ticket as credentials: never log or show them.
- Once the face passes, issue the e-CPF from a CSR, as in the e-CNPJ flow, with no Amplia issue page and no return trip.

## Links

- Live demo: https://try.lacunasoftware.com/en/amplia/issue-an-ecpf-with-your-face (Portuguese: https://try.lacunasoftware.com/pt/amplia/issue-an-ecpf-with-your-face; Spanish: https://try.lacunasoftware.com/es/amplia/issue-an-ecpf-with-your-face)
- Docs: https://docs.lacunasoftware.com/en-us/articles/amplia/integration/issue-from-csr
- Every demo: https://try.lacunasoftware.com/llms.txt and https://try.lacunasoftware.com/demos.json