https://www.civilbeat.org/2025/07/ice-moving-immigrants-arrested-mainland-to-honolulu/
As the world becomes more digitized, various countries could take more of a rounding-up approach towards undocumented people & illegal residents and visitors. While wearable_technology could be useful to better identify and monitor the human herd, it could easily become like something out of a dystopian Sci-Fi story.
https://en.wikipedia.org/wiki/Wearable_technology#Use_in_surveillance
A more interconnected world means that most people will be almost instantaneous trackable.
