Bluetooth is short range and if you are traveling the world, the likelihood that someone with the same tracker will be in the international vicinity of yours at close range is highly unlikely. And I?m a small lady. The black covers for the screws were nice, but honest feedback, a black screw would have been better as the covers were one of the less well made parts of the rack. Takes it everywhere she goes. You can hose them off inside and out and theyll dry in about a minute because of the material theyre made of. Im 57", "apple" shaped and normally wear a size 16 top. They were right. It helps to check off and lay out the pieces ahead of time to be sure all of the parts are there. I have been using this product exclusively with my ps4 pro and I am very impressed with the sound quality. Now she doesnt need to get embarrassed that I might walk in on her (not that it bothered me) because it is so much faster, and easier that its now a less shameful experience (it shouldnt have been but Im glad its not any more!