Samsung is taking smartphone security to the next level in its upcoming One UI 9 update with a highly sophisticated anti-theft feature. Galaxy users will soon be required to enter a PIN, password, or unlock pattern before powering off or restarting their devices. While the power menu continues to function normally, the system acts as a hard stop against shutdowns without a passcode—even if biometric unlock features like facial recognition or fingerprint scanning are active.

Historically, Samsung devices have required a password to power down while the lock screen is active. This safeguard was designed to prevent thieves from immediately turning off a stolen phone to evade location tracking and "Find My Device" functionalities. Since shutting down a stolen device is almost always a thief's first move, this baseline security has proven highly effective.

However, snatch thefts—where a phone is grabbed from a user's hand while the screen is unlocked and actively in use—present an entirely different challenge. The new feature in One UI 9 is engineered to close this exact loophole. If someone attempts to power off or restart the phone while it is unlocked, the system instantly demands a manual PIN or password to verify the user's identity. Crucially, this mechanism bypasses biometric authentication entirely, maximizing the level of security.

Without the screen passcode, a thief is unable to cut the device's power. At this exact moment, a secondary defense mechanism quietly activates. The second the authentication prompt appears, the phone automatically locks its screen. This auto-lock protocol triggers even if the user attempts to back out of the power menu.

In practical terms, a phone snatched while unlocked instantly transforms into a securely locked device that cannot be turned off. With biometric scanning disabled for this specific process, the phone becomes virtually impenetrable until the correct traditional passcode is entered. It is a remarkably clever anti-theft solution from Samsung, giving users crucial extra time to track their devices and significantly boosting the odds of recovering stolen property.