Even if you have never had your smartphone stolen, you probably know someone who has. In London, 80,000 phones were stolen last year alone. And as victims of phone theft know, while the loss of a pricey gadget can sting, the dreary administrative slog in replacing a device that runs your entire life can, in some ways, be worse. So why can't we stop phone thieves – and is there a better way to protect your personal data? The answer is partly down to the numerous ways that criminals profit from stolen phones, but it is also about technology firms prioritising usability over security and international governments failing to arrive at a global solution.

After shirking tradition and devoting its entire Google I/O keynote to showcase how it's stuffing AI into everything imaginable, the company has reserved day two to catch up on the one-time star of the show, Android. Alongside the arrival of the second Android 15 beta on Wednesday, Google is unveiling previously unannounced security features in its 2024 mobile software, including AI-powered theft detection, Google Play fraud protection and more. Theft Detection Lock is a new Android 15 feature that will use AI (there it is again) to predict phone thefts and lock things up accordingly. Google says its algorithms can detect motions associated with theft, like those associated with grabbing the phone and bolting, biking or driving away. If an Android 15 handset pinpoints one of these situations, the phone's screen will quickly lock, making it much harder for the phone snatcher to access your data.