We do see in many jurisdictions including ours, when some civil service people endorsed the use of exposure notification based on Bluetooth technology, namely the exposure notification built by Google and Apple, I believe in Japan is called COCOA, here is called the Taiwan Social Distancing app, we have good mathematical reasons to trust its privacy enhancing properties. But because it’s not transitive, average citizen doesn’t actually trust that and it takes forever for that trust to be communicated.