[anabab]

A government may introduce a list of identifiers of devices allowed to operate in their territory. With relatively frequent verification to prevent the use of captured devices.

[stogot]

Not a bad idea, but I doubt they know how many they have or their citizens have. Let alone serial numbers

[anabab]

IIUC the critical use is by military units, so a process to list all the serial numbers shall be quite straightforward