For legacy apps (that lived in a time before per-permission user-controlled configuration), yes. http://arstechnica.com/gadgets/2015/10/android-6-0-marshmallow-

For legacy apps (that lived in a time before per-permission user-controlled configuration), yes. http://arstechnica.com/gadgets/2015/10/android-6-0-marshmallow-thoroughly-reviewed/5/ http://arstechnica.com/gadgets/2015/10/android-6-0-marshmall... I don't know that it lets you tune what fake data is fed; the intent of the feature seems to be to make it possible for legacy apps to run in M at all, not to fuzz the metrics an app author might be collecting.