# Authentication

After you have linked an account, you can authenticate using the Keyless App. To authenticate, the service you linked will send a push notification to Keyless Authenticator on your smartphone.

Authentication is simple and fast, with a consistent user experience no matter which service you are authenticating to.

![Authentication on the Keyless mobile app.](/files/-MSNg6nL4-JXPeC1o4-c)

## **Congratulations, you're in!** :sunglasses:


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.keyless.io/userguide/using-the-mobile-app/authenticate.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.