"Introducing geofencing… how to keep you in your 15 minute city apart from 100 permitted days leave.

Oxford, Lancaster & other UK100 cities have already have put up their ANPR cameras."

https://smartcitysweden.com/focus-areas/mobility/geofencing/#:~:text=Geofencing%20is%20a%20virtual%20fence,a%20safer%20city%20is%20created.

https://www.conurets.com/how-geofencing-technology-is-helping-in-smart-city-developments/