A bluetooth connection can be compared to what was once known as infared lights (like on the old tv remote controls)... Essentially, there's transmitter in both the computer and on whatever device you are trying to establish a connection with. I have a bluetooth mouse, keyboard and also a phone. Some devices will require a passcode while others will set up a generic one automatically. If you are trying to synchronize your phone with your computer then you will either initiate the sync. feature on either devise .. and it will do the rest. Good Luck