Once downloaded, the app works in the background, using Bluetooth technology to alert people if they have been within two metres for at least 15 minutes with another app user who has tested positive for coronavirus.It also quickly alerts app users you have been in close contact with if you test positive, even if those contacts are unknown to you.People’s privacy will be protected, as the app uses encrypted anonymised codes to determine close contacts, which are deleted after 14 days.
It doesn’t store details on an individual, or their location.Using tried and tested technology, the app will alert people to self-isolate far quicker if they are exposed to the virus, reducing the risk of them infecting others - and the more people who use the.