---
title: Smart Revalidation
description: Re-authenticates users in transactions post registration, allowing the authentication methods to vary by the desired experience and flow criticality.
canonical: https://developer.unico.io/capabilities/smart-revalidation
locale: en
generated_by: markdown-export
---

- [/](/)
- [Capabilities](/capabilities)
- Smart Revalidation

**On this page# Smart Revalidation

Re-authenticates users in transactions post registration, allowing the authentication methods to vary by the desired experience and flow criticality.
### What it does​

Applies a four-tier orchestration engine that dynamically routes each transaction through the most appropriate authentication method based on real-time risk signals:

**Metadata Engine** — analyzes contextual and behavioral data against the user's historical profile to calculate a real-time risk level and determine which authentication tier to deploy.
**Silent Authentication** — runs an AI-driven adaptive engine that scores device metadata, behavioral signals and the user's transaction history in the background to approve returning users with zero friction.
**Facial Biometric** — reserved for high-risk transactions; runs liveness detection and facematch against the user's registered biometric.

### Possible responses​

ResponseMeaning`YES`This is the expected user.`NO`This is not the expected user.
### The `useCase` parameter​

When creating a process, the `useCase` field controls how the orchestration engine routes the transaction. It combines two dimensions:

**Flow type** — the business context of the transaction.
**Criticality level** — the minimum friction baseline, restricting which authentication tiers are available.

#### Flow types​

Flow typeDescription`LOGIN`Flows returning to the client's platform, such as passwordless login, check-in, identity revalidation, and keeping the online session alive.`ACC_MANAGEMENT`Account profile change flows, such as password change, device swap, address update, etc.`FIN_TRANSACTIONS`Monetary movements: transfers, payments, purchases, investment orders.`FIN_SERVICES`Non-monetary financial actions: credit applications, loan releases, card blocking.`CUSTOM`Custom workflows that do not map to standard categories.
#### Criticality levels​

CriticalityAuthentication tiers available`EXPERIENCE` (default)All tiers — engine maximizes silent authentication.`CRITICAL`Facial Biometric only.
#### `useCase` enum values​

CategoryEnum valueDescription**Experience**`USE_CASE_LOGIN`Optimizes UX for return flows to the client's platform, such as passwordless login and check-in.**Experience**`USE_CASE_IDENTITY_REVALIDATION`Variant of `USE_CASE_LOGIN` for periodic identity revalidation with an extended validity window (7-day session / 30-minute step-up), used for the iGaming use case in Brazil.**Experience**`USE_CASE_ACC_MANAGEMENT`Optimizes UX for account profile change flows, such as password change, new device, address update, etc.**Experience**`USE_CASE_FIN_TRANSACTIONS`Optimizes UX for financial transaction flows such as PIX/TED (Brazil), Venmo/Zelle (US), cash withdrawal, etc.**Experience**`USE_CASE_FIN_SERVICES`Optimizes UX for financial service applications, such as contracts and loans.**Experience**`USE_CASE_CUSTOM`Optimizes UX for flows other than those mentioned above.**Critical**`USE_CASE_CRITICAL_ACC_MANAGEMENT`Facial biometrics for account profile changes in more critical cases from the customer's perspective, such as account recovery or frequent profile changes.**Critical**`USE_CASE_CRITICAL_FIN_TRANSACTIONS`Facial biometrics for critical monetary transactions, such as high-value ones.**Critical**`USE_CASE_CRITICAL_FIN_SERVICES`Facial biometrics for critical financial service applications, such as sensitive contracts and loans.**Critical**`USE_CASE_CRITICAL_CUSTOM`Facial biometrics for critical flows in use cases not mentioned above.
### Availability​

Integration components requiredWeb or SDK
### Valid combinations​

Smart Revalidation appears in the `idsmart` flow.
For the full matrix, see [Available flows](/developers/start/flows).
### Products that use this capability​

[Smart Revalidation](/products/step-up-authentication/smart-revalidation/index)
Last updated on Oct 8, 2026**