> For the complete documentation index, see [llms.txt](https://docs.trymatrix.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.trymatrix.xyz/account/security.md).
# Security
Control access to Matrix and review recent security activity.
### Open Security
Open  Home from the bottom navigation and tap the  profile icon in the top-left corner.
From the profile screen, select Security.
### Enable Biometric Unlock
Select Biometrics. Matrix shows the biometric method available on your device, such as Face ID, Touch ID or fingerprint.
Turn on the biometric switch and complete the verification.
When biometric unlock is enabled, Matrix locks after the selected period of inactivity and requires verification to continue. To disable it, turn off the switch and verify again.
### Set Auto-Lock
Select Auto-Lock, then choose when Matrix should lock after inactivity:
* After 1 minute
* After 5 minutes
* After 15 minutes
Auto-Lock applies when biometric unlock is enabled. After Matrix locks, complete biometric verification to return to the app.
### Review Recent Security Activity
Select Recent Login History to open your security activity.
The screen records:
* Account logins and logouts
* App locks
* Successful and failed unlock attempts
* Biometrics being enabled or disabled
Each entry shows the activity, time, authentication method, device and status. Only activity recorded on this device appears here.
### Export Your Wallet Key
Select Export Wallet Key from Manage Account. Review the warnings, confirm the acknowledgements, and tap **Export**. Complete biometric verification if prompted, then sign in on the Privy page using the same login method you use for Matrix.
{% hint style="info" %}
Never share your private key. Anyone with access to it can control your Matrix Wallet, and Matrix cannot recover it if it is lost.
{% endhint %}
### Delete Your Account
Select Delete Account from Manage Account. Review any remaining balances before continuing. Deleting your account does not withdraw funds or close activity at connected venues, so manage them before proceeding.
Confirm that you have exported your private key and understand that Matrix cannot recover your funds if you lose it. Then tap Delete Account and complete biometric verification if prompted. This permanently deletes your Matrix account and disconnects linked accounts. The action cannot be undone.
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