Browser Secure

About

Setup (first time)
Set your PIN

Open extension Options (right-click icon → Options, or via brave://extensions → Details).
Enter a 4–8 digit PIN and confirm.
Click Save PIN.
Configure behavior (Settings on the same page)

Auto-lock when browser opens — PIN required on every launch (recommended).
Auto-lock after idle — Minutes of inactivity before lock (default: 5; set 0 to disable).
Click Save settings.
Optional: Incognito

On the extension card, enable Allow in incognito if you use private windows.
Pin the toolbar icon

Click the puzzle piece → pin Browser Secure for quick access.
How to use
Lock the browser
Click the Browser Secure toolbar icon → Lock browser, or
Wait for auto-lock (on startup or after idle timeout).
Unlock
Enter your PIN in the lock popup → Unlock.
Close without unlocking
Click ✕ on the PIN window → browser quits entirely.
Open the browser again → PIN screen appears (if auto-lock on open is enabled).
Show lock screen again (if needed)
Toolbar icon → Show lock screen (when locked but popup is missing).

Project:
https://github.com/benjamindimalanta/secure-browser-lock