

I dread the elections in France in 2027. France is one of the last bastions of Freedom that is capable of standing up to the authoritarian states if push comes to shove. The last few presidential elections have moved France closer and closer to having a Kremlin sock puppet in charge. While they have managed to pull back from the brink a few times, it only needs to go wrong once.
You can (and some do) insist, that all phones and other digital devices be left outside or out in a well isolated place like a fridge. Furthermore you can use methods of encryption for both physical notes and digital notes. Neither is completely safe from being compromised, but then again hardly anything truly is.
If you want to be fairly certain to not be monitored, always leave digital devices behind and have meetings in varying locations with few or ideally no other people around. Only discuss confidential information with people you know and trust. Even then, experience from places like East Germany proves, nothing is truly safe from being compromised if enough time and energy is spent on the issue.