My hon. Friend is right to raise this. The so-called ping does serve a purpose and it has served a huge purpose as we have been dealing with this pandemic, particularly during the last wave. If someone is pinged, it might be very useful information to them if they were planning in the days ahead to visit a vulnerable person, perhaps a grandparent or someone, so I think it is valuable information to give people. But as I said earlier, I think we can look at the approach and make it more measured, given the high rate of vaccination, and then also, as he suggested, make more use of tests, which is exactly what we are doing.