Hi Unless you are referring to an add-on, I think you might mean Tracking Protection. In Firefox for Android, open the menu and choose '''Settings''', followed by '''Privacy'''. The Do Not Track toggle is at the top of the screen. In Firefox on the desktop (including the awesome Developer Edition), a similar option can be found if you type '''about:preferences#privacy''' in the address bar. I hope this helps and thank you for using Developer Edition - you are helping make the next version of Firefox even better.