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> **Description:** Comprehensive technical documentation for implementing and using the Login API.

# Login API guide

API version: 2.0

Login is the easiest way to sign in and create an account in both digital and physical settings. No typing required! Users don't need to worry about forgetting or losing their usernames and passwords. All they need to remember is their phone number. Login is easier for the user while you as a merchant get better conversion and data quality.

The following topics are described:

* [Overview](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/overview.md) provides high-level descriptions of the Login API flows.
* [Important information](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/important-information.md) to help you integrate with Login.
* [Core concepts](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/core-concepts.md) related to relevant OIDC concepts and parameters.
* [Login from a mobile app](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/mobile-app-flows/README.md) - Choose the right flow for your mobile app integration.
* [Login from a website](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/browser-flow-integration.md) describes how to integrate from a website.
* [Merchant-initiated login](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/merchant-initiated-login-integration.md) with direct login in the Vipps or MobilePay app.
* [In-app confirmation](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/in_app_confirmation.md) requires users to authenticate via the app, bypassing the remembered-in-browser session.
* [User info](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/user-info.md) describes the process of requesting consent and accessing the customer's profile info.
* [Login Connect](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/login-connect/README.md) lets users consent to share payment-source references with a merchant, while a carddata partner receives the payment data.
* [Partner keys](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/partner-keys.md) facilitating integration for partners.
* [Authentication solutions](https://developer.vippsmobilepay.com/docs/APIs/login-api/api-guide/auth-solutions/README.md): How to use the Login API with Auth0 and Azure AD B2C authentication solutions.

> **Full site overview:** For every page in this documentation, read [https://developer.vippsmobilepay.com/llms.txt](https://developer.vippsmobilepay.com/llms.txt).