According to Roozendaal, users do not have to worry about the safety of CoronaMelder. “The app doesn’t know who you are and where you are. Actually, the app rolls a new die every ten minutes with a very large number. You exchange that number for ten minutes with other phones that also use the app. So the app knows. just that he has come across a lot of numbers from other people. ”
If someone indicates in the app that he has the corona virus, the app will indicate that a number of numbers transmitted were in an infectious period. “Then it will be checked on your phone whether you have come across those numbers”, says Roozendaal. “So the app doesn’t actually know who you are and where you are, but it knows afterwards that you encountered someone who turned out to be infected.”
The app then explains which steps the user can best take, such as staying at home or having you tested.
It is not mandatory to download the app. “You do it to protect yourself and others. What we hope is that many people will want to contribute,” says Roozendaal.
If the test with the app goes well, it is expected that the app will be used throughout the Netherlands from September.