> For the complete documentation index, see [llms.txt](https://authenticator.hideez.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://authenticator.hideez.com/user-guide/android-guide/service-operations.md).

# Service operations

In the **"Profile"** section, you can perform the following service operations:

<figure><img src="/files/vKa1D69Sysz4fLOH4znF" alt="" width="163"><figcaption></figcaption></figure>

## Change PIN

To change your PIN in **Hideez Authenticator**, follow these steps:

1. Open the **"Profile"** section and click **"Change PIN"**.
2. Enter your current PIN.

{% hint style="info" %}

* You have **three attempts** to enter the current PIN.
* If you enter the incorrect PIN three times, you will not be able to change it until you successfully authenticate using the correct current PIN.
* PIN change is only possible **after entering the current PIN**, even if biometric login is enabled.
  {% endhint %}

3. Set a new PIN and confirm it.

<div><figure><img src="/files/nlMA1ht60BWGK5Fm6D66" alt="" width="165"><figcaption></figcaption></figure> <figure><img src="/files/mHAYyEBZ2eCwzISr7CmC" alt="" width="164"><figcaption></figcaption></figure></div>

{% hint style="info" %}
**Note:** Remember your new PIN! If you forget it, you will need to delete the key and register it again.
{% endhint %}

{% hint style="warning" %}
**Restrictions:**

* You have **10 attempts** to enter your PIN.
* After **5 unsuccessful attempts**, each subsequent attempt can only be made after **3 minutes**.
* If you enter the wrong PIN 5 more times after that, all data in the app will be erased, and you will no longer be able to use your accounts for authentication.
  {% endhint %}

## Enable Biometric Authentication

You can enable biometric authentication alongside your PIN to access your authentication accounts.

1. Open the **"Profile"** section.
2. Enable biometrics by toggling the switch.
3. Scan your fingerprint using the fingerprint scanner.

Once enabled, biometrics can be used to log in to the app without entering your PIN.

{% hint style="info" %}
**Note:** You can disable biometrics and use only your PIN. However, this **reduces security**, and we do not recommend it.
{% endhint %}

## Interface Language

You can choose from the available interface languages:

* **English**
* **Ukrainian**

## Quick Guide

This section provides an overview of the app's key features.

## Help

In this section, you will find:

* Links to documentation with a complete list of app features.
* An option to submit a support request to our team.

## About the App

Here, you can request a **trial version** of the software.

## Submit a Report

If necessary, you can send a report to improve the product or investigate a specific issue.

{% hint style="info" %}
**Note:** Log files containing event records do not store or collect personal information.
{% endhint %}

## Data Erasure

You can erase all data from the app:

1. Tap **"Log Out"** and select **"Erase All Data"**.

<figure><img src="/files/l4jeMr7QBkMzTI3FVBSg" alt="" width="326"><figcaption></figcaption></figure>

2. Alternatively, tap **"Log Out"** on the login screen and confirm your action.

<div><figure><img src="/files/owj9xCaTeIKlqsLk3KBw" alt="" width="164"><figcaption></figcaption></figure> <figure><img src="/files/6kXlGtqwZ8t9r3ZSxjOC" alt="" width="167"><figcaption></figcaption></figure></div>

{% hint style="warning" %}
**Attention**: After you erase all data in the application, you will no longer be able to:

* Use your account to log in to the server.
* Generate OTP passwords.
* Unlock your workstation.
  {% endhint %}