## Authentication using user's JWT 
User's JWT authentication is used when a request is sent from a browser, mobile application, or game. By default, the `XsollaLoginUserJWT` scheme is applied. For details on how to create a token, see the [Xsolla Login API documentation](/api/login/authentication-schemes#getting-user-token).
The token is passed in the `Authorization` header in the following format: `Authorization: Bearer <user_JWT>`, where `<user_JWT>` is the user token. The token identifies the user and provides access to personalized data.
Alternatively, you can use a [token for opening the payment UI](/api/pay-station/token/create-token).