FRP lock, also known as Factory Reset Protection Lock, is a security feature introduced by Google in Android 5.0 Lollipop and later versions. It helps protect your data from an unauthorized reset of the device to its factory settings. When you enter your Google account information after performing a factory reset on the device, FRP prevents anyone else from using it without permission. This means that if someone were to steal your device or find it lost, they would not be able to access any of its contents even if they performed a factory reset on it unless they had your Google account credentials. With this feature enabled, you can have peace of mind knowing that all of your personal data remains secure and protected even if the device falls into the wrong hands.