Ok, is there a way to scan for mobile phones for example? I am very new to bean but have been working with arduino before. I would like my bean to notice when I come into my office so that it can start the music on my computer and then shut it off when I go out of office as well as log the hours I have been in office. My issue is that I don't know how to scan for the BLE signals of phones. Do you have any example code?