New references in the iOS 27.2 beta show Apple is continuing to develop a feature called AutoLock that will lock an iPhone if it is snatched from an owner’s hand.
The system is reported to rely on the iPhone’s gyroscope, accelerometer and other sensors, and on a paired Apple Watch to detect when the phone has been grabbed and suddenly moved away from the owner’s wrist.
How AutoLock detects a snatch
Code in the beta indicates AutoLock can use several indicators to decide whether an iPhone has been snatched: a sharp acceleration consistent with a snatch; a paired Apple Watch remaining unreachable for a certain period; loss of connectivity to a paired Apple Watch; prolonged loss of network connectivity; and the device remaining unlocked beyond a certain interval.
The beta also contains references to safeguards designed to avoid false positives, including successful biometric authentication and foreground app activity that might otherwise look like a snatch. Additional code suggests AutoLock will use a voting system in which a potential theft signal can request a lock while safeguards such as biometrics and familiar locations can veto that request.
If a theft signal succeeds, the iPhone will lock and trigger Stolen Device Protection to prevent thieves from accessing information on the device. Stolen Device Protection adds extra security when the device is away from familiar locations like home or work: it requires biometric authentication for actions such as accessing stored passwords or credit cards, and it enforces built‑in hour‑long delays for actions like changing an Apple Account password.
Android already offers a Theft Detection Lock feature that locks a smartphone in snatch‑and‑grab situations. It is not clear when or if Apple will ship AutoLock, but the presence of the new code indicates the company is still developing the feature.
