There is no doubt slotxo that "ping" has become one of the verbs to reflect the Covid era - defined as the moment you get an alert on your smartphone from the NHS Covid app and you are instructed to self-isolate.
Self-isolation is a key weapon in the defence against the spread of coronavirus. By knowing that people you've been near, but never met, have since tested positive, it is hoped that the spread can be limited.
You can be asked to stay home for up to 10 days, and not go out for any reason, even to buy food or medicine. You should order online groceries, or ask friends or family to leave items outside your door.
No one from outside your household should come inside, unless a family member receives essential care at home.