There is one thing I need to mention, for my mobile bot, there is no any tracking system insdie. All code wrote by myself. But for PC bot, they bought a frame to create their bot, so none knows that frame has tracking system inside or not. Please no ask me again. Why my mobile bot is expensive than PC bot, the reason is what I just I mentioned above. Good luck ! anyone use PC bot, then someone might monitor your PC already. What they want to do ? have no idea.