The Deputy’s question - whether a person is identified as a close contact and takes the necessary action their close contact notification expires to enable them to receive future notifications - is not a feature of how the Covid Tracker app functions. Users of the app do not have to wait for one notification to 'expire' in order for the app user to receive a further notification - triggered by another individual being confirmed as Covid positive.
The app downloads information on close contacts every 15 to 20 minutes and should it be necessary to alert a user of the app that they have been in close contact with another individual who has been confirmed Covid positive, they will receive a separate alert specific to that encounter. This happens regardless of whether they are still taking the necessary actions associated with a previous and separate close contact notification or if it is the first notification they have ever received.