If you use “OK Google” the function will change. Google removes the "Unlock with Voice Match" or "Unlock with Voice Match" feature, making it much safer to use.
Right now, by using the "Voice match unlock" feature, you can unlock your device by saying "OK Google".
Although this feature is very convenient, it is also a very big security risk. If someone else's voice is similar to yours, then it can get full quite easily access on your device.
As it seems, Google removes this feature from all devices with Android. It started with the Pixel 3 and 3 XL, but confirmed that it will remove τη λειτουργία σε όλες τις άλλες συσκευές με Android, and the Moto X devices and pixel XL will be one of the first devices that will lose this function.
Of course, with this increase in security, there will be at least one loss in functionality, but it seems worthwhile.
Devices will continue to be protected by PIN, pattern, codes access or some biometric verification.