i think that a space inside a faraday cage wud be a good defense against those, until the microdrone can run an autonomous LLM (large language model) on its chip; one cud live inside a faraday cage, which is necessary anyway due to non-native EMF exposure 24/7 in most densely populated regions; plus a routine microwave blast once in a while to clean up the immediate surroundings from drones;

additionally, NFC-signing devices such as a tapsigner obviate the need to expose QR codes or word seeds;