> For the complete documentation index, see [llms.txt](https://docs.epicollect.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.epicollect.net/mobile-application/mobile-app-authentication.md).

# Mobile App Authentication

For enhanced security within our mobile app, only one device can be authenticated at a time. This means that if you log in to the app on one mobile device, and then log in on another mobile device, the first device will be automatically logged out.

For example, if you log in to the app on your smartphone (Device A) while at home, and then later log in on your tablet (Device B), the app on your smartphone will be logged out to ensure that only one mobile device remains authenticated.

However, web access is not affected by this restriction. You can still access your account through the web on your computer or other devices simultaneously, even if you're logged in to the mobile app on one device. This allows you to maintain access to your account on both your mobile app and the web without interruption.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://docs.epicollect.net/mobile-application/mobile-app-authentication.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.