Face unlock on Android isn't as secure as using your fingerprint, and it isn't for lack of trying either. Google had a go at delivering a reliable solution with Soli on the Pixel 4, but recent devices like the Pixel 10 Pro XL rely on software and a combination of the Tensor G5. Huawei also dabbled in secure face unlock for a while, adding a dedicated ToF sensor to its phones.
Thankfully, facial recognition tech is about to get a much-needed upgrade. Metalenz is a U.S. fabless optics company that works on biometric security, and its Polar ID tech is now in mass production. The tech was initially showcased two years ago, and it uses a custom imaging system that uses polarization sensing to deliver a secure face unlock solution. The video below illustrates the tech in action:
