Faces are the Pixel 4's kryptonite

Google needs to fix the selfie camera and Face Unlock.

One of the most controversial new features of Google's latest flagship is its Soli radar sensor. It allows you to interact with the phone by swiping at the air in front of the display, and also enables Face Unlock. But, that login method has a glaring flaw -- it will unlock your phone even if your eyes are closed. This means anyone near you can pick up your Pixel 4 and access your data by holding it in front of your face, even if you're asleep.

Thankfully, Google is already working on a fix for that, saying it is adding mandatory eye-detection fix to Face Unlock in the coming months. The thing is, there are still several important issues Google needs to address to make Face Unlock a feasible authentication method. Until then, I can't in good conscience recommend the Pixel 4 to anyone, no matter how amazing the cameras are.

My first issue with Face Unlock, aside from the soon-to-be-patched eye detection flaw, is that it only allows me to add one facial print. On the iPhone, you can have one alternate "look." As my colleague Chris Velazco pointed out in his review, the Pixel 4 doesn't recognize me as the same person with and without makeup on. When I set up Face Unlock with a bare face, I couldn't get into my phone when I was done up. When I set it up with makeup on, I couldn't log in after washing my face. This was a problem regardless of how much makeup I was wearing. The Pixel 4 had trouble recognizing me even when I used a smaller amount, and only logged me in about 50 percent of the time.