The German's app will use bluetooth to track whom you're closed to on the device. When you get ill, the device notifies everyone that id 18911-2342-112312 has i

The German's app will use bluetooth to track whom you're closed to on the device. When you get ill, the device notifies everyone that id 18911-2342-112312 has it and people who came in bluetooth range to you will get a notice to self isolate.