# Reverification: Public Beta

Our new **reverification** feature protects sensitive actions by requiring that users have verified their credentials recently. If not, the user is prompted to verify their credentials again.

## How it works

Our SDK has been updated with new backend and frontend helpers to detect and coordinate a reverification flow. This is how you can protect a Next.js route handler:

filename: /app/api/transfer/route.ts
```ts
import { auth, reverificationErrorResponse } from '@clerk/nextjs/server'

export const POST = async (request: Request) => {
  const { has } = await auth()

  // Check if the user has *not* verified their credentials within the past 10 minutes.
  const shouldUserReverify = !has({ reverification: 'strict' })

  // If the user hasn't reverified, return an error with the matching configuration (e.g., `strict`)
  if (shouldUserReverify) {
    return reverificationErrorResponse('strict')
  }

  const { amountInCents } = await request.json()
  // Now that the user has verified credentials, let's perform the sensitive action
  const updatedResource = await db.updateBalance(amountInCents)
  return new Response(JSON.stringify(updatedResource))
}
```

Then, from the frontend, you can configure fetch to listen for the reverification error and prompt the user for reverification. You can use our new `useReverification()` helper for this:

filename: /app/transfer/page.tsx
```tsx
'use client'

import { useReverification } from '@clerk/nextjs'

export default function Page({ amountInCents }: { amountInCents: number }) {
  const [transferMoney] = useReverification(() =>
    fetch('/api/transfer', {
      method: 'POST',
      body: JSON.stringify({ amountInCents }),
    }),
  )

  return <button onClick={transferMoney}>Transfer</button>
}
```

Whenever Clerk identifies that a user needs to verify their credentials, a modal will appear, similar to the one shown in the image.
![reverification component](./reverification-ui.png)

## Get started

Visit the [reverification guide](https://clerk.com/docs/guides/reverification.md) to discover examples on how to integrate this feature into your application today.