# Authenticate shoppers with Bolt ID

> Checkout-native identity that unites authentication, trust signals, and one-click checkout across the Bolt network.

Source: https://help.boltapp.com/products/bolt-id

**Bolt ID** is the identity layer for commerce: it unites identity intelligence, authentication, and checkout so merchants get stronger trust and higher conversion while shoppers get a faster path to purchase.

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

Merchants who want passwordless login, cross-site shopper recognition, and identity signals built into checkout instead of bolting on a separate auth stack.

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

1. Shoppers sign in with one-time codes, passkeys, or linked store accounts.
2. Bolt ID verifies the shopper against the Bolt network and your store policies.
3. Saved addresses and payment methods prefill at checkout.
4. Identity and risk signals feed fraud review without extra integration work.

## Get started [#get-started]

| Task                                | Link                                                 |
| ----------------------------------- | ---------------------------------------------------- |
| Passwordless SSO on your storefront | [SSO Commerce](/products/add-ons/sso-commerce)       |
| Biometric login on mobile           | [Passkeys](/products/add-ons/passkeys)               |
| Link existing store accounts        | [Account Linking](/products/add-ons/account-linking) |
| Auth in a custom UI                 | [Embeddable Checkout](/products/embeddable-checkout) |

## Related [#related]

* [Check-In](/products/check-in): one-click sign-in at checkout
* [User Network](/products/user-network): recognized shoppers across Bolt merchants
* [Bolt Checkout](/products/checkout)