Just talked to a friend about it - he is head of a nursing home group in Central Europe.
He had multiple cases when they had relatives trying to do that. Funnily enough the main reason cited by the relatives was to stop other relatives from “doing something funny about the will” .
They actually have a policy when they place a hidden camera in cases of alleged property theft - but this is done in conjunction with the client, their relatives (if not the target), sometimes the court and done by a professional company in a way that the actual patient is not part of the picture/not compromised. (And it’s paid for by the facility - they don’t want a rotten apple as well)
Not a construction worker but I work with disaster relief and humanitarian aid organisations.
It is not possible if you care for either the inhabitants or your own folks
If you don’t it is, plainly said, fairly easy. It happens in basically every conflict.