Apple has released iOS 17.3, the latest software update for iPhones, packed with new features including enhanced security capabilities to help protect devices that fall into the wrong hands.

The highlight of the update is a new “Stolen Device Protection” system designed to prevent thieves from easily gaining access to sensitive information stored on a stolen iPhone. In the past, thieves could force victims to unlock devices or guess simple passcodes, then instantly gain access to saved passwords, financial information, or even take over the victim’s online accounts.

Stolen Device Protection aims to put a stop to this by requiring biometric authentication such as Face ID or Touch ID as well as a waiting period before critical account changes can be made on a stolen device. For example, if a thief tries to change an Apple ID password, reset iCloud data, or apply for a fraudulent credit card, the system will force them to wait at least an hour and then re-authenticate with Face/Touch ID. This gives the victim time to log in, lock their device, and change passwords before thieves can capitalize on the theft.

The new system relies on location tracking to determine when unfamiliar behavior occurs, so it will only enforce the extra security measures when an iPhone is away from “familiar” locations like the owner’s home or workplace. Users can easily turn Stolen Device Protection on or off in their Face ID & Passcode settings.

Beyond the major security enhancement, iOS 17.3 brings collaborative playlists to Apple Music, allowing multiple users to contribute to shared playlists. It also enables casting video streaming apps to supported TVs in hotels for the first time. And it likely contains the usual array of security fixes and improvements as well.

The iOS 17.3 update is available now for compatible iPhone models. Apple has also pushed software updates for older iOS versions that may contain vital security patches.