My son has just been told to isolate via the app for 7 days (works in a pub so always a risk)
He's now corralled on the top floor (own bathroom) but our room is opposite and I think the app could see it as a contact if within 15 feet ? (Through the wall)
It says on the app you can only turn it off for 12 hours at a time and it will prompt you every 12 hours