While the slow release of Android Oreo continues, Google is working on its next mobile OS version. And if a new report is to be believed, it’s expected that the Android P will feature native call recording option.

According to the Neowin, some recent commits have been spotted which add support to play a “call recording tone,” which is a 1400Hz frequency tone that repeats itself after every 15 seconds.

This new call recording tone will be added to the outgoing audio stream so that the person on the other end can know that the call is being recorded. While recording a call is illegal in many parts of the world, this behavior will ensure that feature meets regulatory compliance requirements.

However it remains to be seen if Google will open up this functionality to app developers because the commits don’t mention a public API. Google will unveil Android P at the I/O 2018 conference.

Google took down over 700,000 apps from Play Store in 2017