Enlarge (credit: Google)

Google is apparently stepping up its efforts to crack down on illicit distribution of Google’s Android apps. According to XDA Developers, Google logins on unlicensed devices will now fail at setup, and a warning message will pop up stating “Device is not certified by Google.” This warning screen has appeared on and off in the past during a test phase, but XDA (and user reports) indicate it is now headed for a wider rollout.

While the basic operating system code contained in the Android Open Source Project is free and open source, Google’s apps that run on top of Android (like the Play Store, Gmail, Google Maps, etc.) and many others are not free. Google licenses these apps to device makers under a number of terms designed to give Google control over how the OS is used. Google’s collection of default Android apps must all be bundled together, there are placement and default service requirements, and devices must pass an ever-growing list of compatibility requirements to ensure app compatibility.