# Sign in shoppers with Check-In

> Turn every sign-in into a one-click, passwordless experience at checkout and across your storefront.

Source: https://help.boltapp.com/products/check-in

**Check-In** replaces long login forms and forgotten passwords with a one-click sign-in flow built for checkout and repeat purchases.

## Who this is for [#who-this-is-for]

Merchants who want faster account access at checkout and across the storefront without maintaining password infrastructure.

## How it works [#how-it-works]

1. Shoppers enter an email or phone number at sign-in or checkout.
2. Bolt sends a secure one-time code or prompts for a passkey.
3. Bolt ID verifies the shopper and loads saved profile data.
4. Returning shoppers complete checkout in fewer steps on your store and across the Bolt network.

## Get started [#get-started]

| Task                                    | Link                                           |
| --------------------------------------- | ---------------------------------------------- |
| Enable passwordless login on your store | [SSO Commerce](/products/add-ons/sso-commerce) |
| Add biometric login on mobile           | [Passkeys](/products/add-ons/passkeys)         |
| Shopper account overview                | [Shop with Bolt](/shoppers/shop-with-bolt)     |
| Identity layer details                  | [Bolt ID](/products/bolt-id)                   |

## Related [#related]

* [Bolt ID](/products/bolt-id)
* [User Network](/products/user-network)
* [Bolt Checkout](/products/checkout)