The technologies and infrastructure in question:
- video/image analysis + nationwide networks of cameras created to "protect us"
- geospatial data and live tracking of GPS coordinates on everyone's phones + on cell towers.
- passport/immigration controls at borders
Would be great if countries could mobilize this infrastructure in times like this, but I don't think this is happening in the West. China/South Korea were more effective in this regard.
And it definitely shows the state of "AI" - it can do what it is trained to do. We still can't throw AI at some arbitrary problem with many moving parts and expect it to come up with best available ideas.