Last week Google and Apple started making their APIs available, for Android and iOS, respectively, in a first wave of 22 countries.
The technology became available for health agencies to explore applications built from scratch or be incorporated into existing apps in the proximity control of people in contact with COVID-19.
A team from Switzerland will have produced the first application to integrate the APIs, SwissCovid, the application adopted by Switzerland to control the disease.
The app is already available to the Swiss army, hospital workers and other civilian employees, the BBC said. There is another application in Latvia also about to be launched, Apturi Covid.
The applications are intended to detect when two people are close, long enough for there to be a risk of contagion, by sending a notification if one of them has been diagnosed with the disease.
The solution of the two technological giants prevent the companies that produce the applications from collecting data from their location, among some other privacy restrictions.
The Swiss application now needs to pass the parliamentary debate before it is offered to the general public, something the government hopes to achieve in mid-June. It is estimated that it is supported by around 70% of the Swiss population.