"...we hereby appeal to the competent Belgian authorities: be careful with the corona app! Such an app faces not only legal, but also ethical, social, political and technical problems (both in the case of voluntary and mandatory implementation)."
“China, Israel, Russia, South Korea, Singapore and Taiwan already started using a specific type of technology in the fight against the coronavirus: the so-called “corona app”. In the meantime, this idea has also reached our region. Many of our neighboring countries are already making plans to create such an app and the European Commission has written a recommendation about it. In our country, numerous companies have submitted proposals for an app to Minister Philippe De Backer. Similarly, virologist Marc Van Ranst (member of the governmental expert group on the virus) recently mentioned that Belgium is not far removed from implementing such a technology.”
100 Belgian academics warn government: urgent debate needed on the corona app (pdf)