Easy solution: Cattle ear tags for politicians.
Of course, I'm not sure how that'd work in Russia. I assume at least some of the criminal masterminds who fill the role of the West's owner class have a, like, inkan [0] or something.
[0] https://en.wikipedia.org/wiki/Seal_(East_Asia)#Japanese_usag...
The various UK sagas for lockdown eye checks etc would be easier to monitor.