I am currently sat on my bed in a hotel room with my phone on the bedside cabinet. Less than 0.5m through the wall it sounds like someone else is doing the same. In the event that they are diagnosed with having the virus at some time in the next couple of days, will my phone register me as having spent the whole night less than 0.5m apart and require me to self isolate or will the blue tooth signal not penetrate through a hotel wall ?